Work through the modules in order. Your progress is saved as you check off each step.
What a mini app is, what yours will do, and how to scope it down to something you can actually finish.
The three accounts your app needs, what each one does, and why it costs you nothing to start.
Turning the idea into a brief clear enough that AI builds what you meant.
Getting the tools installed and building the app itself. The Claude Code and ChatGPT Codex steps are alternatives - do whichever one you use.
Seeing it work, and finding what is not working yet.
Shipping it, then installing it on your own phone as a real app.