Guides & Tutorials

Practical guides for developers, students, and job seekers.

How to Write an ATS-Friendly Resume in 2026

90% of large companies use Applicant Tracking Systems to filter resumes before a human ever sees them. Here's exactly how to beat the algorithm and get your resume in front of real people.

Python 3.12 vs 3.13 vs 3.14: What Actually Changed and Why It Matters

Three major Python releases in quick succession brought significant changes — better error messages, a free-threaded mode, experimental JIT compilation, and major typing improvements.

Git & GitHub for Your First Job: Beyond git push

You know git add, commit, and push. But your first week at work will hit you with rebase, merge conflicts, squash commits, and PR reviews.

System Design for Interviews: The 5 Patterns You Actually Need

Every MAANG interview now includes system design — even for 2 YOE candidates. Skip the 500-page books. These 5 patterns cover 80% of interview questions.

AI Coding Assistants in 2026: How to Use Them Without Becoming Replaceable

Every student uses Cursor, Copilot, or Claude Code. But interviewers are asking: 'How do you know this code is correct?'

SQL in 2026: Window Functions, CTEs, and the Queries That Actually Get Asked in Interviews

Stop writing SELECT * and hoping for the best. These are the SQL patterns that separate backend engineers from database wizards — and the exact questions Uber, Stripe, and Meta are asking in 2026.

Cisco Ideathon 2026: How to Build a Winning Project (Even If You're a Beginner)

Cisco Ideathon 2026 registrations are opening soon. Here is the complete playbook — from cracking the online assessment to building an idea that impresses Cisco engineers.

Model Swapping: The One-Line Change That Breaks Production (And Nobody Talks About It)

You changed one line — model = 'gpt-5' to model = 'gemini-3' — and everything broke. Not the API. Not the prompt. The model itself. Here is why model swapping is the most underestimated skill in AI engineering.

The 2026 Full-Stack Roadmap: What to Learn (And What to Skip)

The full-stack definition changed in 2026. It is no longer just React + Node. Here is the exact stack that gets you hired — and the technologies you should stop wasting time on.

How Agentic AI Actually Works: The Simple Python Nobody Shows You

Strip away the buzzwords. Under the hood, multi-agent systems are just async functions sharing state. Here is the 40-line Python implementation nobody talks about.

The No-BS Roadmap to Learning Agentic AI: From Zero to Production

Stop chasing every new framework. Agentic AI has a clear skill stack, and most people are learning it backwards. Here is the exact path from first principles to shipping production multi-agent systems.

30 Data Science Interview Questions That Actually You Should Know In 2026.

Forget generic prep lists. These are the exact questions Google, Meta, Amazon, Netflix, and Stripe asked candidates this year — with answers that separate the hire from the almost-hire.