Learn Computer Science
from Zero to Advanced
Complete journey from "What is a computer?" to building full-stack apps, AI projects, and landing your first developer job. Designed for Class 12 and college students.
🌟 Start Here — Beginner Track
Full roadmap →Introduction to CS
What is a computer? What is code? How does software work? Start here — zero knowledge needed.
Programming Fundamentals
Logic building, algorithms, flowcharts & problem solving — skills every developer must have.
HTML — Build Web Pages
Create your first webpage today. Tags, links, images, forms — the building blocks of the web.
💻 All Programming Languages
View all →HTML
Web structure
BeginnerCSS
Design & layout
BeginnerJavaScript
Web interactivity
IntermediatePython
AI, data, scripts
BeginnerC / C++
Systems & speed
IntermediateJava
Enterprise & Android
IntermediateNode.js
Backend JS
AdvancedSQL
Databases
Intermediate🔥 Popular Lessons
Browse all →💻 What is a Computer?
Hardware, software, CPU, RAM, storage — understand the machine powering the digital world.
⌨️ What is Programming?
Discover what programming really is, why to learn it, and write your very first program today.
📐 Algorithms
Break problems into steps. Learn sorting, searching, and Big O — the foundation of coding interviews.
🐍 Python for Beginners
Variables, loops, functions, lists — the most beginner-friendly language, used in AI and web dev.
Practice & Projects
Coding exercises, mini projects, and quizzes to solidify your skills. Learn by building.
Career Guidance
Roadmaps for Web Dev, AI, Data Science. Get your first developer job step by step.
💻 Introduction to Computer Science
Start from absolute zero. No prior knowledge needed. Understand what computers are and how the digital world works.
What is a Computer?
Hardware vs software, CPU, RAM, storage, types of computers, and the IPO model.
What is Programming?
What code is, why you should learn it, how programs run from text to machine instructions.
What is Code?
Explore programming languages, how code gets translated, compiled vs interpreted languages.
How Software Works
From apps to OS — how software layers work, system calls, and how programs talk to hardware.
🧠 Programming Fundamentals
Master the thinking skills every developer needs — before writing any code.
Logic Building
Boolean logic, AND/OR/NOT gates, decision trees, truth tables — the brain of programming.
Algorithms
Step-by-step problem solving, searching, sorting, and measuring efficiency with Big O notation.
Flowcharts
Visualize your algorithm before coding. Learn standard symbols and diagram any program flow.
Problem Solving
Decomposition, pattern recognition, abstraction, and pseudocode — how top developers think.
Most beginners rush to learn syntax without building problem-solving skills. Developers who master fundamentals write better code 10x faster — and ace technical interviews.
💻 Programming Languages
Start with HTML+CSS, then Python, then JavaScript. Each has beginner-to-advanced coverage.
HTML
Beginner FriendlyThe foundation of every webpage — tags, elements, forms, tables, semantic HTML5. Build your first page today.
CSS
Beginner FriendlyStyle and design beautiful websites. Flexbox, Grid, animations, media queries, CSS variables.
JavaScript
IntermediateThe language of the web. DOM, events, fetch API, ES6+, async/await. Make pages interactive.
Python
Best for BeginnersThe #1 first language. Clean syntax, AI/ML/web dev use. Variables, loops, OOP, file handling.
C / C++
IntermediateMaster fundamentals. Pointers, memory management, data structures — essential for competitive programming.
Java
IntermediateOOP, JVM, Spring. Essential for Android development and enterprise backend systems.
🖥️ Web Development
From static pages to full-stack applications. Build real websites and web apps.
Frontend Development
Build beautiful, responsive UIs. HTML, CSS, JavaScript, and React.js for modern web apps.
- HTML5 & CSS3 mastery
- Responsive & mobile-first
- JavaScript DOM manipulation
- React.js fundamentals
- Git & GitHub
Backend Development
Build server-side logic with Node.js, Python Flask/Django, and REST APIs.
- Node.js & Express.js
- Python Flask & Django
- REST API design
- Authentication & Security (JWT)
- Server deployment (Render, Railway)
Databases
Store and query data efficiently. SQL, MySQL, PostgreSQL, and MongoDB (NoSQL).
- SQL — SELECT, JOIN, GROUP BY
- Database design & normalization
- MySQL & PostgreSQL
- MongoDB & Mongoose
- Database security & indexing
APIs & REST
Connect applications together. Build and consume REST APIs, HTTP methods, JSON, auth.
- HTTP methods (GET, POST, PUT, DELETE)
- JSON & API design
- Authentication (JWT, OAuth2)
- Postman & API testing
- Third-party APIs (weather, maps, payment)
🚀 Capstone: Build a Full-Stack Web App
After completing all web dev modules, you'll build a complete app with React frontend, Node.js backend, and MongoDB database — deployed live to the internet.
💪 Practice & Projects
Coding is learned by doing. Exercises, projects, and quizzes to make skills stick.
🎯 Knowledge Quizzes
General CS Quiz
Test knowledge across all topics — computers, programming, algorithms.
HTML Quiz
Test your HTML tags, attributes and structure knowledge.
Python Quiz
Test Python fundamentals — syntax, loops, functions, lists.
🔨 Mini Projects
📄 Personal Portfolio Website
Build your own portfolio with HTML & CSS — showcase who you are and what you're learning.
🧮 Calculator App
Build a working calculator with HTML, CSS, and JavaScript — all arithmetic operations.
✅ To-Do List App
Full to-do list with add, complete, delete. Store data in localStorage — survives page refresh.
🌤️ Weather App
Fetch real weather data from OpenWeatherMap API and display it for any city in the world.
💡 Coding Exercises
| # | Problem | Level | Hint |
|---|---|---|---|
| 1 | Print numbers 1 to 10 | Easy | |
| 2 | Check even or odd | Easy | |
| 3 | Factorial of a number | Easy | |
| 4 | Reverse a string | Medium | |
| 5 | Check if palindrome | Medium | |
| 6 | Prime numbers up to N | Medium | |
| 7 | Fibonacci series | Easy | |
| 8 | Count vowels in string | Easy | |
| 9 | Find max in a list | Easy | |
| 10 | Binary search | Medium |
🚀 Career Guidance
Actionable steps from student to professional developer. Real advice for Indian students.
How to Start Coding
You don't need a degree or to be a genius. Start right now:
- ✅ Pick ONE language first (Python or HTML+CSS)
- ✅ Code every day — even 30 minutes counts
- ✅ Build small projects — not just tutorials
- ✅ Join communities (Discord, r/learnprogramming)
- ✅ Google freely — every developer does
- ✅ Don't skip fundamentals — they matter long-term
- ✅ Use free platforms: CS Academy, freeCodeCamp, MDN
Become a Developer (6–12 months)
The proven path from beginner to employed:
- 📚 Month 1–2: Learn HTML, CSS, basic JavaScript
- 📚 Month 3–4: Python or JS frameworks (React)
- 🔨 Month 5–6: Build 3–5 portfolio projects
- 📁 Month 6: GitHub profile + portfolio website
- 📝 Month 7–8: Apply to internships (Internshala, LinkedIn)
- 🤝 Ongoing: Hackathons, open source, networking
🗺️ Career Roadmaps
🌐 Web Development Roadmap
From zero to full-stack web developer. ~6–12 months consistent study.
🤖 AI & Machine Learning Roadmap
Become an AI/ML engineer. Strong Python + math required. ~12–18 months.
📊 Data Science Roadmap
Analyze data, extract insights. Programming + statistics combo. ~8–12 months.
Start with web development — highest demand, fastest path to job. Use Internshala, LinkedIn, Naukri for internships. Target Infosys, Wipro, TCS off-campus + startups. Build a strong GitHub + deploy projects. Practice LeetCode Easy problems after 3 months.
🗺️ Your Complete Learning Roadmap
Follow this step-by-step journey. Complete each stage before moving to the next for the best results.
📊 My Learning Dashboard
📚 Lesson Progress
🏆 Achievements
⚡ Quick Actions
🎯 Knowledge Quiz
Answer 5 questions to earn XP!
⚙️ Content Management Admin
Manage your dynamic MongoDB lessons here.