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An introduction to computer programming from Waterloo

Computer-science foundations taught through programming problems

Interactive programming lessons reinforced by short reviews

Zig study for readers with prior programming experience

An annual collection of language-independent programming puzzles

Illustrated programming lessons with browser coding practice

Japanese programming lessons in short videos

A curated roadmap for programming-contest skills

Mathematical problems that reward programming solutions

Programming courses with language and framework paths

Deeper R language study for practising programmers

Programming courses built around substantial project practice

Programming guides spanning C and network concepts

Algorithm explanations for competitive programming

Short programming tutorials beside exercises and references

Learn C by implementing a small programming language

Creative programming tracks for beginners

Edit code on iPhone or iPad with broad syntax highlighting, remote file access, and an SSH terminal.

A reactive Python notebook editor that saves notebooks as ordinary Python files.

Write statically typed Nim programs and compile them with a toolchain designed for systems and application work.

A browser IDE for running short code samples or building supported multi-file projects across many languages.

Compile systems software with a general-purpose language built around explicit control and cross-compilation.

Write visual sketches in a desktop editor and run them in a graphics window with Processing.

Compile Ruby-inspired, statically typed Crystal programs into native executables.