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Arnab Biswas

Arnab Biswas teaches full-stack JavaScript — React, Node, Express and MongoDB — at DevHives in Kolkata, a coding school operated by Learnzo Technologies. He works with beginners making their first move into software, and writes the posts on this blog. Questions about something you read here? Email arnab00725@gmail.com.

94 articles

GitHub logo representing the platform for hosting a project that a stranger can clone and run.
technology8 min read

How to Put a Project on GitHub With a Good README

A repo becomes a portfolio piece when a stranger can clone it and run it in five minutes. That takes four files: your code, a README.md with install and run steps, a .gitignore that keeps junk out, and a LICENSE.

Arnab Biswas
A browser window and a server rack side by side, showing the frontend and backend as separate parts that need connecting.
technology8 min read

How to Connect React to a Backend API (CORS, Fetch, MongoDB)

React doesn't talk to your API; the browser does. Build an Express server, fetch data in React, fix the CORS error with one line of middleware, and keep data in a free MongoDB Atlas M0 cluster.

Arnab Biswas
Two logos side by side: React and Next.js, with React highlighted on the left, showing that React should be learned first.
technology9 min read

Next.js vs React for Beginners: Learn React First

Next.js is built on top of React, so it assumes you already know components, props, and state. Learn React's basics first, then build your first real project in Next.js.

Arnab Biswas
A staircase of ten steps leading up to a flag, symbolizing the ten-week roadmap to a frontend developer job.
study tips8 min read

Frontend Developer Skills for Freshers: A 10-Week Roadmap

Landing a frontend developer job in India takes more than HTML and a little JavaScript. This 10-week roadmap walks you through HTML, CSS, JavaScript, React, TypeScript, and Next.js, with a project and salary payoff for each step.

Arnab Biswas
A large question mark, representing the ML interview questions for freshers.
career growth11 min read

Machine Learning Interview Questions for Freshers (2026)

ML theory questions are now part of normal fresher hiring at Indian IT service companies. Prepare ten core questions with a three-part answer pattern, not ninety shallow ones.

Arnab Biswas
Two Claude logos side by side, one labeled with rupees and one with dollars, showing the price comparison.
technology10 min read

Claude Pro Price in India 2026: ₹2,000 vs $20 and the Real Gap

Claude Pro costs about ₹2,000 a month in India when billed annually, with GST included. The US price of $20 has no tax built in, so India's real premium is only about 5%, not the 24% the sticker numbers suggest.

Arnab Biswas
A large question mark representing the unclear role of Forward Deployed Engineer and the curiosity it sparks.
ai8 min read

Forward Deployed Engineer: What It Means in 2026 and How to Become One

Search "forward deployed engineer" tonight and you will see OpenAI postings, none in India. The work exists in Indian cities under the title Applied AI Engineer, and the skills are trainable now. Here is what the role does, what it pays, and how a fresher builds toward it.

Arnab Biswas
A large question mark representing the API returning specific answers instead of text.
ai10 min read

OpenAI Decisions API: Fast, Cheap Classifications in 2026

OpenAI's Decisions API is now generally available as of October 22, 2026. It returns typed answers like probabilities, choices, and scores instead of written text, at a fraction of the cost.

Arnab Biswas
A rising staircase with a flag at the top, representing a four-year plan from high school to full stack developer.
career growth10 min read

How to Become a Full Stack Developer After 12th: 4-Year Plan

Your degree name matters less than your employer type. Start with HTML, CSS, and JavaScript in year one, follow roadmap.sh in order, and target a GCC or product company for a higher fresher salary.

Arnab Biswas
A large question mark representing the uncertainty about Grok's free tier limits and whether it suffices.
technology8 min read

Is Grok AI Free in 2026? Limits, Prices, and the Honest Test

Grok has a free tier, but xAI publishes no exact daily limits. Paid plans now start under The X Subscription, with Premium at ₹3,399 in India. Here's how to test if free is enough for your work.

Arnab Biswas
Three interview rounds with the first one cleared, showing the stages of the Accenture CSE interview.
career growth10 min read

Accenture Custom Software Engineer Interview Questions (2026)

Accenture's 2026 Custom Software Engineer hiring has three steps: an online assessment, a 45-60 minute technical interview, and an HR round. For the SAP ABAP role, the technical panel tests internal tables, SELECT statements, enhancements and S/4HANA basics.

Arnab Biswas
Database cylinders connected to a laptop screen
ai8 min read

OpenAI Models on Google Cloud: What Students Need to Know

Google Cloud announced OpenAI's GPT-6 Astra, Sol, and Luna are coming to Model Garden. Access is limited to select enterprise customers in private preview, with no public pricing yet. Here's what's real and what's still coming soon.

Arnab Biswas
GitHub and GitHub Copilot logos side by side, indicating the free browser-based coding assistant.
technology7 min read

How to Use GitHub Copilot Web Free for Your Coding Projects

GitHub Copilot Web works entirely in your browser with no credit card and no IDE. The Free plan gives you 2,000 code completions and 50 chat requests monthly, enough for explaining files, fixing bugs and delegating tasks.

Arnab Biswas
Two Gemini logos side by side, showing old and new versions, representing the leak and the current model.
ai7 min read

Gemini 4 Carbon Leak: What Developers Should Know

No concept of search exists here. Gemini 4 Carbon is a leak, not a product. Google has not announced it. Build with Argon and judge Carbon when it launches.

Arnab Biswas
A document with a blank band representing a certificate, contrasting with projects.
study tips8 min read

Best Free JavaScript Courses for Beginners in India in 2026

As of October 2026, I checked Scaler, freeCodeCamp and Scrimba for what you really get for free. Scaler's course ends with a certificate you can share on LinkedIn, and freeCodeCamp's five projects do more for your resume than any certificate.

Arnab Biswas
A table with one highlighted row, symbolizing the deep SQL knowledge required for senior roles.
career growth11 min read

SQL Interview Questions for 5 Years Experience

Interviewers for 5+ years of experience score depth, not syntax: window functions, index design, reading EXPLAIN and thinking in sets. The 30 questions below are grouped into six topics, each showing how to structure an answer that proves your experience.

Arnab Biswas
A tick and a cross symbolizing the choice between on-campus and off-campus routes in Wipro's hiring process.
career growth10 min read

Wipro Hiring Process 2026: All Rounds Explained

Wipro's 2026 fresher hiring has one 128-minute test and two routes. On campus, your coding score decides Velocity at 3.5-4.0 LPA or Turbo at about 7 LPA. Off campus, you apply directly and start as a Trainee at ₹3.0-4.0+ LPA.

Arnab Biswas
Four interview rounds with the next one open, showing Mphasis's multi-stage process.
career growth9 min read

Mphasis Interview Questions for .NET Developer: Fresher Guide 2026

Clear Mphasis's AMCAT test, group discussion, technical round and HR round with the exact topics asked. Practice the C#, OOP, SQL, LINQ, and EF Core questions from this post. Read the 24-month bond terms before you sign and follow a 30-day prep plan to pass.

Arnab Biswas
A staircase of five steps with a flag on top, representing the career path from school to machine learning engineer.
career growth9 min read

How to Become a Machine Learning Engineer After 12th (2026)

You will almost certainly not be hired as a machine learning engineer straight out of class 12, and that is normal. This guide shows the realistic route: a B.Tech, a first job in a production-data role, and the one skill that raises your pay before graduation.

Arnab Biswas
A sparkle representing AI next to a code bracket, meaning building an AI agent with code for free.
technology9 min read

How to Build AI Agents: Free Tutorial With Python and Google ADK

Build a working AI agent for free using Python, Google's open-source ADK, and OpenRouter's free models. No credit card needed. You'll create a tool-using agent with memory in under 10 minutes, plus a hackathon-ready project idea.

Arnab Biswas
A sparkle (AI) beside a hand-written bracket (code), showing the shift away from canvas to direct code editing.
technology8 min read

ChatGPT Canvas Is Gone in 2026: How to Edit Code Now

OpenAI removed canvas from GPT-5.5 models on May 28, 2026. Writing blocks and code blocks inside the chat thread have replaced it. Here's the exact workflow to edit code today.

Arnab Biswas
Two Gemini logos side by side, showing the co-creation of slides and videos from sources.
ai7 min read

Gemini Notebook Co-Creation: Make Slides and Videos in 6 Steps

Google added a guided flow to Gemini Notebook for creating slide decks and video overviews from your sources. You confirm topics, steer content, review outline notes, and only then render, all on the free plan.

Arnab Biswas
A rising staircase with a flag at the top, showing a step-by-step journey from commerce to a data analyst job.
career growth8 min read

How to Become a Data Analyst After 12th Commerce in 2026

You can become a data analyst after 12th Commerce without a master's degree or advanced math. With 4-6 months of focused work and the right tools, you can be job-ready for entry-level roles paying ₹3-6 LPA.

Arnab Biswas
Abstract code editor window with coloured lines of code
study tips8 min read

Wipro NLTH 2026 Syllabus: Pattern, Sections & 30-Day Prep Plan

Wipro does not publish an official NLTH pattern, so here is the most commonly reported structure: Aptitude (48 questions in 48 minutes), an NLP-scored essay, and Automata Coding (2 problems in 60 minutes). Plus a realistic 30-day prep plan that budgets real hours across all sections.

Arnab Biswas
Five lanes with one lit runner, representing the different Infosys hiring tracks and which one matters.
career growth8 min read

Infosys Hiring Process 2026: Tracks, Test Sections, and Salary

Infosys will hire 20,000 campus freshers this year. Here's the full 2026 process: the three channels, SE/SP/PP eligibility bars, exact test sections, interview questions, and background-check pitfalls that can pull your offer.

Arnab Biswas
Magnifying glass over a laptop showing an error warning
ai9 min read

NVIDIA RTX Spark laptops 2026: price in rupees, specs, verdict

NVIDIA's RTX Spark laptops bring a Blackwell RTX GPU and Grace CPU into one chip, running 120B-parameter models locally. US pricing starts at $2,399, and the honest verdict is that this feels like a developer beta, not a student laptop.

Arnab Biswas
A browser window and a server rack split in two, showing AI features split between cloud and on-device.
technology8 min read

Browser AI Features: What Works on Your Laptop in 2026

Chrome and Edge now ship real AI features, but hardware requirements vary wildly. Here's exactly which browser AI features work on a budget or student laptop in 2026, and which silently won't.

Arnab Biswas
A large question mark, symbolizing the crucial question a fresher should ask before coding.
career growth9 min read

Ask Why Before Coding: The One Question That Saves First-Job Weeks

Before you touch any code, ask: "What is this actually for?" This one question saves days of wasted work, as a fresher learned after five days of optimizing the wrong thing. Trace your task backwards with five whys, confirm the real goal with your lead, and start shipping work that actually counts.

Arnab Biswas
Two DeepSeek logos side by side, indicating a version comparison, with the new version improving coding scores.
ai6 min read

DeepSeek V4.1 Flash 1017: Coding Score Jumps from 31.2 to 42.3

DeepSeek's latest Flash update pushes coding scores from 31.2 to 42.3 on Terminal-Bench while cutting API costs to as low as $0.003 per million input tokens on cache hits. For Indian students, this is the cheapest way yet to practice coding and build agentic projects.

Arnab Biswas
Two logos side by side, Python and React, suggesting a comparison of coding tools for students.
ai8 min read

Reflection Beam 1.0: a cheap open coding model students can use

Reflection Beam 1.0, a 501B open-weight coding model, scores 81.6% on SWE-Bench Verified, and a small coding request costs less than one rupee. Here is how students can use it today through OpenRouter, without a GPU.

Arnab Biswas
A sparkle representing AI next to a code bracket showing the study tool's dual nature
study tips10 min read

New Gemini Notebook Study Tools for Indian Students

Google added video overviews, interactive learning overviews, and three new quiz formats to Gemini Notebook. Learn how Indian students can use them for revision and claim one year of Google AI Plus free.

Arnab Biswas
Two salary bars, the taller one lit: a GCC fresher can earn up to Rs 12 LPA, against up to Rs 7 LPA in IT services.
career growth7 min read

GCC vs IT Services for Freshers in India: Which Pays More in 2026?

Global Capability Centres (GCCs) pay freshers Rs 6-12 LPA, nearly double what IT services offers. With 2,117 GCCs in India hiring 200,000 net new roles, here's how to get in through campus programs and build the AI skills that get you hired.

Arnab Biswas
A low block and a tower with a jump between them, representing the leap from service work to product work in the IBM ASE role.
career growth15 min read

IBM Associate System Engineer 2026: Eligibility, Test Pattern, Salary

IBM's Associate System Engineer off-campus drive is open for 2024 and 2025 CS/IT graduates with a confirmed October 14 test date. Here's the eligibility filter, the four-round process, and the real salary estimate of ₹4.5–6.5 LPA.

Arnab Biswas
Python logo versus a Google Gemini sparkle logo, representing the software engineer vs prompt engineer decision.
career growth8 min read

Software Engineer vs Prompt Engineer for Freshers in 2026

Standalone prompt engineer roles dropped by about 30% between 2024 and 2026, while roles requiring prompt skills tripled. Here's why freshers should build software engineering fundamentals first and layer prompt skills on top, not chase a shrinking title.

Arnab Biswas
A downward curve showing software jobs declining, with a dotted floor representing what remains.
career growth7 min read

Zoho Founder's AI Warning: What Software Freshers Must Do in 2026

Zoho's Sridhar Vembu's 'please pray for us' comment signals AI is reshaping software jobs, not ending them. Freshers who build deep domain expertise and use AI as a tool will still find places, but the prep playbook must change now.

Arnab Biswas
A red 'SUSPENDED' stamp over the green card path, meaning the visa program's suspension.
career growth7 min read

US Green Card Suspension vs Indian Freshers: What Job Seekers Must Know in 2026

The US suspended PERM filings for TCS, Infosys, Wipro and Microsoft, but the six big Indian firms filed under 2% of all PERM applications last year. For Indian freshers, the green-card path was never a near-term payoff — here is what the news actually changes.

Arnab Biswas
A green tick beside a red cross: the post weighs whether an unpaid internship in India is worth it.
career growth13 min read

Unpaid Internship Worth It in India? A Legal & Honest Answer

An unpaid internship in India is worth it only when it is short-term, learning-focused, and linked to your studies. Learn the legal reality, red flags, and a 5-question test to decide before you say yes.

Arnab Biswas
The Google Gemini logo, for the launch of Gemini 4 Argon and what it costs students
ai8 min read

Google Gemini 4 Argon for Students: Costs, Access, and Free Alternatives

Google's top coding model, Gemini 4 Argon, launched today at #1 on the Vals Index. But Indian students can't access it for free, and the $2/$10 API price doubles on November 30. Learn the real costs and free alternatives like Flash-Lite and Claude Haiku 5.5.

Arnab Biswas
Four buckets, each taller and fuller than the last, the four separate fresher job markets and their pay
career growth8 min read

Companies Hiring Freshers in India 2026: The 4 Buckets

The Indian fresher job market in 2026 is not one market. It is four separate markets with wildly different salaries, from 3.5 LPA at IT services to 12–30 LPA at product companies. Know which bucket you belong in before you prepare.

Arnab Biswas
A laptop sharing its screen live with an amber play button, demonstrating a project in an interview
career growth8 min read

How to Demo Your Project in a Fresher Interview

Interviewers doubt fresher project claims for good reason. A live screen-share demo proves your work better than rehearsal. This post gives you a complete script: five files to open in order, what to point at, and the exact words to say.

Arnab Biswas
Five lanes with a runner in each and one lane lit amber, the five tech roles still hiring freshers
career growth8 min read

Best Entry-Level Tech Roles for Freshers in India 2026

Entry-level tech hiring fell from 28% to 15% of the workforce, but emerging-tech roles now carry 52% of demand. Here are the five lanes where freshers are actually wanted in 2026, and how to pick the right one for your skills and city.

Arnab Biswas
A microphone over a three-part bar with the long middle part lit, a present, past and future self-introduction
career growth10 min read

Tell Me About Yourself: The Fresher Answer Formula for India

The Present-Past-Future formula turns "Tell me about yourself" from a scary opener into your strongest minute. You get 30 seconds on who you are, 60 seconds on one proof from your past, and 30 seconds on your future with the company.

Arnab Biswas
An offer letter with three lines flagged in red and an amber padlock, the bond and notice period clauses
career growth12 min read

Employment Bond India Fresher: What Your Offer Letter Hides

Your offer letter is a legal contract, not a formality. Three clauses can affect you more than the salary figure: the employment bond, the probation period, and the notice period. Read these three first, in that order, before you celebrate the CTC.

Arnab Biswas
A college building with a dotted amber path leading away from it, finding a job outside campus placement
career growth8 min read

Off-Campus Placement in India for Freshers: The 6-Step System

Build an off-campus job-search routine: find drives, plan applications, practise aptitude questions and prepare for interviews. This six-step guide explains the process for Indian freshers.

Arnab Biswas
The GitHub logo beside a green contribution graph, the profile a recruiter checks in about a minute
career growth8 min read

How to Make Your GitHub Profile Attractive to Recruiters

Recruiters spend about 60 seconds on your GitHub before making a decision. This weekend guide walks you through fixing your profile photo, bio, pinned repos, commit messages, and READMEs so your profile becomes the tie-breaker that gets you the interview call.

Arnab Biswas
A wall of twenty sent envelopes with one lit amber, many job applications for one reply
career growth8 min read

How Many Job Applications Do Freshers Need in India?

Plan for 160–200 applications and 4 months to land your first developer job in India. Here are the real numbers and how to raise your conversion rate.

Arnab Biswas
Seven stacked bars narrowing like a sieve with one marked red, the seven rounds of a fresher interview process
career growth10 min read

The Indian Fresher Interview Process: All 7 Rounds Explained

Most freshers don't fail the Indian interview process because the coding was hard. They fail a round they didn't know existed. Here are the 7 rounds, what each one filters for, and where to spend your prep time.

Arnab Biswas
A video call window with code on one side and the interviewer on the other, a technical screening call
career growth13 min read

How to Pass the Technical Screening Round for Freshers

Freshers spend months grinding LeetCode, then get cut in a 30-minute screening call they never prepared for. Here's exactly what happens in that call at Indian companies and how to get past it with a scripted walkthrough.

Arnab Biswas
A speech bubble holding a code symbol beside a short timer, describing your project quickly in an interview
career growth9 min read

How to answer "tell me about your project"

Describe your project with the STAR method: Situation, Task, Action, Result. Spend most of your time on Action, showing what YOU did with quantified results. This article gives you a full worked example and a 30-second version for quick rounds.

Arnab Biswas
A ring chart filled to 78 percent, the share of new hires who negotiated and got a better offer
career growth8 min read

How to Negotiate Your First Developer Job Offer in India

Most freshers accept their first offer in 30 seconds out of fear. The data says that fear is mostly wrong: roughly 78% of new hires who negotiated got a better offer. Learn the exact timing, email template, and phone scripts to negotiate safely.

Arnab Biswas
A network of people with one amber path from you through two contacts to a company, a referral built over weeks
career growth7 min read

How to Ask for a Job Referral (3-Week Playbook)

A referral is trust you earn over three weeks, not a favour you beg for in one message. Here is the exact connect, engage, ask sequence with copy-paste messages — and why referrals fill 30–50% of hires.

Arnab Biswas
A database result table with an amber header row and one matched row lit, the output of a first SQL query
technology14 min read

SQL for Beginners: 5 Commands to Learn First

SQL powers every social media feed, online store, and banking app you use. Yet most beginners skip it because courses bury the basics under theory. Here are the five commands that handle 90% of real database work, explained without the jargon.

Arnab Biswas
A clock face with a forty-five minute block lit in amber, one focused coding practice session
study tips8 min read

How Many Hours Should You Practice Coding Daily?

Practice coding for 1 to 2 focused hours most days, split into two 45-minute blocks. Short daily sessions beat marathon weekends because your brain needs time between sessions to move learning into long-term memory.

Arnab Biswas
An arrow rising into a cloud, a first web app being deployed online on free hosting
technology6 min read

How to Deploy Your First Web App for Free

You can put a working web app online today without spending a rupee. This guide walks you through the exact flow: Vercel for the frontend, Render for the backend, and the free-tier limits that bite students.

Arnab Biswas
Sixty applications sent against zero replies, the usual result of applying for a software internship without a strategy
career growth8 min read

How to Get Your First Software Internship in India

Last semester a student told me he had sent 60 applications and heard nothing back. His skill was fine — his strategy was wrong. Here is how to fix it.

Arnab Biswas
A red error warning triangle, the moment a beginner freezes and needs a repeatable debugging plan
study tips8 min read

How to Debug Your Code as a Beginner: A 5-Step Plan

Reading an error message feels like freezing, not solving. This 5-step plan walks you through reading errors, using console.log and breakpoints, explaining your code aloud, and fixing one change at a time. Stay calm and debug like a pro.

Arnab Biswas
Python and JavaScript logos side by side with a versus badge, the first-language choice a beginner has to make
technology11 min read

Python vs JavaScript for Beginners: Which Should You Learn First?

Python's adoption jumped 7 points on Stack Overflow's 2025 survey, but JavaScript still lands more entry-level web jobs in India. Pick based on your target role — data/AI means Python, web development means JavaScript — not on trending charts.

Arnab Biswas
The number thirty-five struck through in red, age crossed out as a reason not to start learning to code
self growth10 min read

Am I Too Old to Learn to Code? The Honest Answer for 2026

No, you are not too old to learn to code. I teach career-switchers at 30, 35, and 40 in India. Here is the honest 2026 answer: what gets harder, what gets easier, and how to start without wasting a year.

Arnab Biswas
An AI sparkle beside a hand-written code bracket with a versus badge, machine-written against human-written code
self growth6 min read

Is It Worth Learning to Code Now That AI Exists?

Scared AI makes learning to code pointless? Here’s my honest answer: yes, it’s still worth it, but what you learn and how you learn it has to change.

Arnab Biswas