0 XP

33 levels

Each level is one idea and a few commands. The track is built so each stop earns the next, but nothing is locked, so start wherever you like.

0 of 33 complete

01
Commits
0/3
Files, staging, commits, and reading history.
1.1Your first commit 1.2Two trees, two diffs 1.4Take it back
02
Branches
0/4
A branch is a pointer. Everything else follows from that.
2.1Make a branch 2.2Point a branch at the past 2.3Detached HEAD 2.4Read the graph
03
Merge
0/4
Fast-forward, real merges, and what a second parent means.
3.1Fast-forward 3.2A real merge 3.3Force the bubble 3.4Which commits are on which branch
04
Rebase
0/5
Replaying commits onto a new base, and transplanting a branch.
4.1Merge vs rebase, same fork 4.2Rebase copies, it never moves 4.3Finish the integration 4.4Squash the mess 4.5Transplant a branch
05
Conflicts
0/4
Markers, --continue, --abort, ours versus theirs.
5.1Your first conflict 5.2Take one side 5.3Blend both sides 5.4Back out
06
Remotes
0/5
Fetch, pull, push, and why a push gets rejected.
6.1origin/main is a cache 6.2Fetch is safe 6.3Pull is two commands 6.4Pull with rebase 6.5The rejected push
07
Undo
0/5
reset, revert, reflog, and which of them rewrite history.
7.1Three kinds of reset 7.2Squash with a soft reset 7.3Undo what you pushed 7.4Recover from the dead 7.5Move one commit
08
Boss level
0/3
No new commands. Real scenarios, start to finish.
8.1Wrong branch 8.2Hotfix from the wrong parent 8.3Ruin it, then fix it

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