Git records the history of your project — every change, when you made it, and the ability to go back. GitHub is a website that stores your Git projects online, so you can back them up and share them.

The difference in one line: Git is the tool on your machine; GitHub is the place online where your code lives.

Why it's worth the effort:

• A safety net — you can always return to a working version.
• A portfolio — employers and collaborators can see what you've built.
• Teamwork — many people can work on the same project without overwriting each other.

The next lessons get you set up and through your first save.