Beginner · 5 courses

CS Foundations

Build durable mental models. Learn how computers work, program from first principles, get an intuition for data structures and Big-O, and sharpen the debugging and problem-solving skills that make everything else easier.

Start the path

By the end you'll be able to

  • ✦Explain how computers represent and run programs
  • ✦Program with confidence from first principles
  • ✦Pick the right data structure and reason about cost
  • ✦Debug and break down problems methodically

Your track

Computer Science Basics

Demystify the machine. Understand how computers think, store, and solve — no maths degree required.

Beginner22 lessons4h 20m

Programming Fundamentals

Learn to think like a programmer — one clear idea at a time.

Beginner21 lessons4h 30m

Data Structures, Gently

Meet the everyday containers that hold your data — and learn when to reach for each one.

Beginner20 lessons4h 20m

Python Basics

Write your first real programs in the friendliest language there is.

Beginner22 lessons4h 50m

Debugging & Problem Solving

Turn 'it's broken and I have no idea why' into a calm, repeatable process.

Beginner22 lessons3h 50m