About DayOneCode
DayOneCode teaches coding from the very first step, for kids and grown-ups who have never written a line of code.
Why it starts before the code
Most coding courses open with a program. Beginners then stall on things nobody explained: where a file lives, what a folder is, why the terminal says it cannot find a path. DayOneCode starts one step earlier. Level 1 shows that a computer only follows steps in order, that everything on it is a file, that files live in folders, and that every file has an address. Then the terminal is simply another way to open those folders.
How the lessons work
Each lesson takes about five minutes. A card at the top says one new idea in a few words, and the board below is where you try it: a robot that follows your steps, a pretend file explorer, a path builder and a practice terminal. PlayBuddy and PlayType, the two guides, stand beside the board and speak in their own recorded voices. After two slips a green ring shows the way, and each level ends with a test and a sticker.
The course has 10 levels, from your computer to PowerShell, Python, web pages, Git and working with an AI coding agent. All 84 lessons are ready, and every one is free today.
What we will not do
- No accounts and no sign-up. Progress is saved in your browser only.
- No ads in the lessons, and nothing about a child is collected or sent anywhere.
- No pretend promises: finishing a level means you can do what that level teaches, nothing more.
Who makes it
DayOneCode is made by the small team behind TypePlay and AbacusPlay, free learning sites for typing and the abacus. DayOneCode is an independent learning site, not affiliated with or endorsed by Anthropic. Claude and Claude Code are trademarks of Anthropic. DayOneCode is also not made, sponsored or endorsed by Microsoft, the Python Software Foundation or GitHub.
Questions and answers
Who is DayOneCode for?
Anyone who has never coded: curious kids from about 9, teenagers, parents and grown-ups changing careers. The lessons assume nothing, not even what a folder is.
Why start with files and folders instead of code?
Because that is where most beginners get stuck. A program that cannot find its file, or a command typed in the wrong folder, stops people long before the code itself does.
Is DayOneCode made by Anthropic, Microsoft or GitHub?
No. DayOneCode is an independent learning site. It teaches tools made by other companies, but it is not made, sponsored or endorsed by any of them.
Last updated: 13 November 2026