Explore
This page links to pages about programming. These pages explain ideas. They do not have puzzles.
Syntax
Variables, loops, conditionals, and functions in two languages, side by side.
Read →Languages
What Python, JavaScript, C, and SQL are each used for.
Read →History
Important events in the history of programming, from 1843 to now.
Read →Tech & Society
How the people who write code make decisions that affect other people.
Read →Tools
The editor, the terminal, and version control. Tools programmers use every day.
Read →