Unit 0. Welcome to the course

Onboarding

Ten minutes, once.

git clone https://github.com/Gecko-Academy/dev3pack-cohort-2026-09.git
cd dev3pack-cohort-2026-09
uv run bootcamp start

Three commands. The last one installs everything, checks it, and ends on "All set." followed by the one thing to type next. Run it as often as you like — every step checks before it acts.

Two things that account for most first-hour failures. Stay in that folder — cd dev3pack-cohort-2026-09 is not decoration, and running a command outside it is what produces bootcamp: command not found. And on Windows, use Git Bash or WSL2 rather than PowerShell.

No uv yet? SETUP.md installs it, and git, per platform.

bootcamp doctor says what is missing and how to fix it. When it is green, open 00-START-HERE.ipynb in your notebook editor: it links every unit in order and reads the curriculum live, so a newly published week appears in it without you doing anything.

Your GitHub account is your identity

Submissions are pull requests from your fork of the public submissions repository, and the final assignment's score is attributed to your GitHub login. Your notebooks and scores become public under that login. If you would rather they did not, submit from a second account; nothing in the course needs your real name.

Getting help

Ask in the cohort channel, or run hint("chNN-eN") inside a notebook. A hint costs marks; being stuck costs more.