# vitalstack.co.in

> Learn to code and use AI, explained simply


## Posts

- [How to Build a Developer Portfolio That Gets You Hired](https://vitalstack.co.in/developer-portfolio-guide/): Build a portfolio that proves your skills: which projects to choose, how to write READMEs, what to put on your portfolio site and GitHub, and how to present your work in interviews.
- [Frontend vs Backend vs Full-Stack: Which Path Should You Choose?](https://vitalstack.co.in/frontend-vs-backend-vs-full-stack/): What frontend, backend and full-stack developers do, the skills and tools for each, how they work together, and how to pick the path that suits you.
- [How to Start Learning to Code: A Realistic Roadmap](https://vitalstack.co.in/how-to-start-learning-to-code/): A realistic plan for complete beginners: choosing your first language, setting up, a month-by-month roadmap, daily habits, getting unstuck and avoiding tutorial hell.
- [How to Use AI Coding Assistants Without Losing Your Skills](https://vitalstack.co.in/ai-coding-assistants-guide/): Get real value from AI coding assistants: what they're good and bad at, a safe workflow for generating and reviewing code, and habits that keep you learning.
- [What Are AI Agents? How They Work and When to Use Them](https://vitalstack.co.in/what-are-ai-agents/): AI agents explained simply: how a language model plus tools plus a loop can plan and complete multi-step tasks, real examples, risks, and how developers build them.
- [Git and GitHub for Beginners: A Complete Practical Guide](https://vitalstack.co.in/git-and-github-for-beginners/): Learn version control from scratch: what Git is, installing and configuring it, commits, branches, merging, pushing to GitHub, .gitignore, and fixing common mistakes.
- [Skills Every Developer Needs in the Age of AI](https://vitalstack.co.in/developer-skills-in-the-age-of-ai/): Which developer skills matter more now that AI writes code: fundamentals, problem framing, reading code, debugging, testing, system design, security, communication and domain knowledge.
- [How to Use AI to Learn Programming Faster](https://vitalstack.co.in/learn-programming-faster-with-ai/): A step-by-step study system for learning to code with an AI tutor: explanations at your level, practice questions, debugging help, project feedback and spaced review.
- [How the Web Works: What Happens When You Type a URL](https://vitalstack.co.in/how-the-web-works/): Follow a web request step by step: URLs, DNS, IP addresses, TCP and HTTPS, HTTP requests and responses, servers, and how the browser turns HTML, CSS and JavaScript into a page.
- [How Large Language Models Work (Without the Maths)](https://vitalstack.co.in/how-large-language-models-work/): A clear explanation of large language models: tokens, next-word prediction, training, context windows, temperature, why they hallucinate, and how to use them well.
- [How to Become an AI Engineer: A Step-by-Step Roadmap](https://vitalstack.co.in/ai-engineer-roadmap/): A realistic roadmap to becoming an AI engineer: what the role involves, the skills to learn in order, projects that prove them, and how to land your first role.
- [How to Write Better AI Prompts: A Practical Guide](https://vitalstack.co.in/how-to-write-better-prompts/): A practical framework for writing prompts that get useful answers from AI assistants, with before-and-after examples for coding, writing, learning and data tasks.
- [What Is Artificial Intelligence? A Plain-English Guide](https://vitalstack.co.in/what-is-artificial-intelligence/): What AI really is, how it differs from normal software, the main types of AI, where you already use it every day, and what it can and can't do.

## Pages

- [Terms of Service](https://vitalstack.co.in/terms-of-service/): By using vitalstack.co.in you agree to these terms. If you do not agree, please do not use the site.
- [Editorial Policy](https://vitalstack.co.in/editorial-policy/): vitalstack.co.in publishes beginner-friendly guides to programming and artificial intelligence. This page explains how those guides are made.
- [Disclaimer](https://vitalstack.co.in/disclaimer/): Everything on vitalstack.co.in is for general educational purposes.
- [Cookie Policy](https://vitalstack.co.in/cookie-policy/): Cookies are small text files a website stores in your browser. This page explains which ones vitalstack.co.in uses.
- [About Us](https://vitalstack.co.in/about-us/): When I started learning to code, most tutorials either assumed I already knew things I didn't, or buried the useful part under pages of theory.
- [HTML, CSS and JavaScript Online Editor](https://vitalstack.co.in/tools/html-online-editor/): Write HTML, CSS and JavaScript online and see the result instantly. A free live editor for learning web development.
- [Regex Tester](https://vitalstack.co.in/tools/regex-tester/): Test regular expressions online with live highlighting, capture groups and replace. Ready-made patterns for email, phone, URL and dates.
- [JSON Formatter and Validator](https://vitalstack.co.in/tools/json-formatter/): Format, beautify, minify and validate JSON online. Shows the exact line and column of errors and can sort keys.
- [SQL Online Playground](https://vitalstack.co.in/tools/sql-playground/): Practise SQL online with a ready-made sample database. Run SELECT, JOIN, GROUP BY and more in your browser, free.
- [Python Online Compiler](https://vitalstack.co.in/tools/python-online-compiler/): Write and run Python 3 code online, free, with input() support. Runs in your browser: no install, no sign-up.
- [Git Cheat Sheet](https://vitalstack.co.in/cheat-sheets/git-cheat-sheet/): Git commands on one page - setup, commit, branch, merge, rebase, remote, stash, undo mistakes and a clean team workflow with GitHub pull requests. Printable.
- [DSA and Big-O Cheat Sheet](https://vitalstack.co.in/cheat-sheets/dsa-big-o-cheat-sheet/): Big-O complexities of data structures and algorithms, the interview pattern finder (which pattern for which problem) and Python templates for binary search, BFS, DFS, sliding window and DP. Printable.
- [Angular Cheat Sheet](https://vitalstack.co.in/cheat-sheets/angular-cheat-sheet/): Modern Angular on one page - CLI, standalone components, bindings, @if/@for, pipes, signals, services and DI, routing, reactive forms, HttpClient, RxJS and OnPush. Printable.
- [React Cheat Sheet](https://vitalstack.co.in/cheat-sheets/react-cheat-sheet/): React on one page - JSX, components, props, useState, events, forms, lists and keys, useEffect, context, useReducer, useRef, memo, custom hooks and React Router. Printable.
- [Spring Boot Cheat Sheet](https://vitalstack.co.in/cheat-sheets/spring-boot-cheat-sheet/): Spring Boot on one page - annotations, REST controllers, Spring Data JPA repositories, validation, error handling, configuration, security, testing and Actuator. Printable.
- [Java Cheat Sheet](https://vitalstack.co.in/cheat-sheets/java-cheat-sheet/): Core Java on one page - types, strings, arrays, collections, OOP, interfaces, records, enums, exceptions, lambdas and streams, with Java 21 syntax. Printable.
- [CSS Cheat Sheet](https://vitalstack.co.in/cheat-sheets/css-cheat-sheet/): CSS on one page - selectors, specificity, box model, colours, text, Flexbox, Grid, positioning, responsive media queries, variables and animations. Printable.
- [HTML Cheat Sheet](https://vitalstack.co.in/cheat-sheets/html-cheat-sheet/): Every HTML tag you need on one page - page structure, text, links, images, lists, tables, forms, inputs, semantic layout, media and accessibility. Printable.
- [SQL Cheat Sheet](https://vitalstack.co.in/cheat-sheets/sql-cheat-sheet/): SQL queries on one page - SELECT, WHERE, ORDER BY, JOINs, GROUP BY, HAVING, INSERT, UPDATE, DELETE, constraints, indexes and window functions. Printable.
- [JavaScript Cheat Sheet](https://vitalstack.co.in/cheat-sheets/javascript-cheat-sheet/): Modern JavaScript on one page - variables, types, strings, arrays, objects, functions, DOM, events, fetch and async/await. Free and printable.
- [Python Cheat Sheet](https://vitalstack.co.in/cheat-sheets/python-cheat-sheet/): Python syntax on one page - variables, strings, lists, dicts, loops, functions, classes, files, errors and comprehensions. Free and printable as PDF.
- [Free Coding Tools](https://vitalstack.co.in/tools/)
- [Cheat Sheets](https://vitalstack.co.in/cheat-sheets/)
- [Daily Challenge](https://vitalstack.co.in/daily-challenge/)
- [Interview Problems](https://vitalstack.co.in/dsa-problems/)
- [Brain Games](https://vitalstack.co.in/games/)
- [Contact Us](https://vitalstack.co.in/contact-us/)
- [Blog](https://vitalstack.co.in/blog/)
- [Tutorials](https://vitalstack.co.in/tutorials/)
- [Privacy Policy](https://vitalstack.co.in/privacy-policy/): This Privacy Policy explains what information vitalstack.co.in ("we", "us") collects when you use this website, how we use it, and the choices you have.


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