Intro

“Git is a time machine for your project.”

Welcome! Over three short days you'll learn the tool almost every developer on Earth uses to keep their work safe. Today is Day 1: just you and your laptop. Nothing goes to the internet today.

The problem you already have

Be honest — you have a folder like this somewhere. Here's the thing: this is version control. Just the painful kind. You invented it yourself because you already understand why it needs to exist.

The problems with the DIY approach: you don't know what changed between versions, when it changed, or why. And if two people edit at once — chaos. Git fixes all four.

Set up your terminal (2 minutes)

Any version number is fine. If you get command not found, install Git first — everything else in this course depends on it.

The plan for Day 1

• One diagram — the only theory of the day.
• Six commands — init, status, add, commit, log, checkout.
• One wow moment — rewinding your project in front of your own eyes.
• A practice terminal you cannot break, right here on this site.