Git fundamentals

What you'll learn

• The mental model: snapshots, refs, and HEAD
• Branches, merges, and resolving conflicts without panic
• Rebase — when to use it, when not to
• Recovering from anything with the reflog
• Bisect: finding the bad commit fast
• Day-to-day ergonomics — aliases and hooks

1. 01
   What git is actually doing

   Snapshots, not diffs. The model everything else falls out of.
   12 min
2. 02
   Commits, refs, HEAD

   Three concepts that explain 80% of confusing errors.
   14 min
3. 03
   Branches

   What a branch really is, and why creating one is free.
   13 min
4. 04
   Merging

   Fast-forward, three-way, and what the conflict markers mean.
   14 min
5. 05
   Rebase

   Rewriting history safely — and the one rule you must not break.
   18 min
6. 06
   Interactive rebase

   Squash, fixup, reword. Cleaning up before review.
   16 min
7. 07
   Cherry-pick and revert

   Moving and undoing single commits without melodrama.
   12 min
8. 08
   The reflog will save you

   Why almost nothing in git is truly lost.
   13 min
9. 09
   Remotes, fetch, pull, push

   What each command actually changes. Spoiler: not what you think.
   14 min
10. 10
    Merge conflicts, calmly

    A method, not a panic.
    17 min
11. 11
    Bisect

    Finding the commit that broke it, in O(log n) coffees.
    13 min
12. 12
    Hooks and aliases

    Small ergonomics that pay back daily.
    14 min