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Learn programming the friendly way.

Short lessons, clear examples and a playground to try things out. Pick a language and write your first program in minutes.

Start with Python Open the playground
  • Bite-sized lessons
  • Run in browser
  • Perfect for beginners
hello.py
Reset Run 
1def greet(name):
2    return f"Namaste, {name}!"
3
4for learner in ["Asha", "Ravi"]:
5    print(greet(learner))
OutputClear
Namaste, Asha!
Namaste, Ravi!

Choose a language

Every track starts from zero and builds up step by step.

Python

Readable, versatile and a favourite first language. Great for scripting, data and science.

15 lessons

C

Small, fast and close to the hardware. Learn how memory and programs really work.

21 lessons

Java

Strongly typed and object-oriented. Powers Android apps and large back-end systems.

33 lessons

JavaScript

The language of the web. Runs in every browser, so you can try it right here.

15 lessons · runs in browser

Go deeper

Ready for interviews and the GATE exam? Learn how data is organised and how fast algorithms really are.

Data Structures & Algorithms

Arrays to graphs, sorting to dynamic programming, with Java, Python and C code and GATE-style practice questions.

23 lessons · Java, Python & C ยท GATE-style questions

GATE CS preparation

Subject-wise lessons for the GATE Computer Science exam, each with figures, worked examples and practice questions.

12 of 12 subjects ready

How it works

Start learning in three simple steps.

1

Read a short lesson

Each topic fits on one page and explains one idea with plain words and small examples.

2

See the output

Every example shows exactly what it prints, so you know what to expect before you run it.

3

Try it yourself

Copy any example, or open it in the playground and run it right in your browser.