Git & GitHub

Stop fearing the command that rewrites history.

beginner · 2–4 weeks · 2 milestones · 6 topics

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The ModelUnderstand the graph and the commands stop being magic.

Collaboration & RecoveryWorking with people, and undoing mistakes.

Full outline

Git's actual data model, everyday workflows, collaboration on GitHub, and confident recovery from every mess you can make.

01The Model
Understand the graph and the commands stop being magic.
- How Git stores things
  Commits, trees, blobs and refs. Ten minutes here saves years of confusion.
- Everyday commands
  The loop you will run thousands of times.
- Branching & merging
  Parallel work without stepping on each other.
02Collaboration & Recovery
Working with people, and undoing mistakes.
- GitHub workflow
  Where the collaboration actually happens.
- Rewriting history
  Powerful tools — safe once you know the rules.
- Getting out of trouble
  Almost nothing in Git is truly lost. Here is how to find it.