Git and GitHub Full Course: Zero to Confident Team Use in One Video

Original author：Harban AI LABS

Original source：https://www.youtube.com/embed/kCxwN6hfsLA

Git and GitHub from zero to confident team use, in one video of about 8.5 hours with chapters. It is cut from the 201-lesson course of Harban AI Labs: 56 lessons in 12 parts, in order, without the series framing. What you will learn - The mental model: a commit is a snapshot, the three places every command works on, history as a graph, a branch as a pointer. - Daily work: status, add, commit, diff, log, and staging exactly what you mean. - Branching and merging, and how to read and resolve a conflict. - Remotes: clone, fetch, pull, push, and what to do when a push is rejected. - Undo without fear: restore, reset, revert, stash. Rewriting history safely: amend, rebase, interactive rebase, cherry-pick. - Recovery with the reflog. Pull requests, review, merge methods, rulesets and code owners on GitHub. - At overview level: tags and releases, bisect, hooks, Git LFS, GitHub Actions, leaked secrets, signed commits. Who it is for: working developers who want the whole path in one place, from the first repository to team workflows. No earlier Git knowledge is assumed. Shown on Git 2.55 on macOS; GitHub as of October 2026. Free companions Handbook (PDF, the same 12 parts): https://github.com/harshaksh-singh/git-github-mastery/releases/download/one-shot-companions-v1/git-github-handbook.pdf Cheat sheet (PDF, 3 pages): https://github.com/harshaksh-singh/git-github-mastery/releases/download/one-shot-companions-v1/git-github-cheatsheet.pdf Lab scripts used in the video (labs/run ...): https://github.com/harshaksh-singh/git-github-mastery Good to know: the lessons come from a longer course, so the narrator sometimes says "video 7" or names a lab script; each lesson start shows its course video number. Not covered here: authentication setup, Git internals, submodules, GitHub Actions in depth. Chapters 0:00:00 Start here: who it is for, the map, how to use it 0:01:16 Part 1: The mental model 0:01:26 Git vs GitHub: what version control solves 0:11:25 Your first repository: init, add, commit 0:21:32 Snapshots, not diffs 0:32:47 The commit graph, refs and HEAD 0:38:17 The three trees: working tree, index, HEAD 0:44:41 Part 2: Daily work 0:44:51 Reading git status 0:55:47 .gitignore and the already-tracked trap 1:03:07 The index: what git add writes 1:12:23 Three diffs and staging with add -p 1:23:24 git log as a graph query 1:36:37 Part 3: Branches 1:36:47 A branch is a ref 1:45:57 git branch and git switch 1:57:13 Detached HEAD 2:06:20 Part 4: Merging and conflicts 2:06:30 Fast-forward merges and the merge base 2:15:17 The three-way merge 2:22:19 Anatomy of a merge conflict 2:28:12 Resolving merge conflicts 2:41:34 --ff-only, --no-ff and --squash 2:46:45 Part 5: Remotes 2:46:55 Remotes and git clone 3:00:06 git fetch 3:09:51 Upstream branches and git pull 3:21:36 git push and rejected pushes 3:33:24 Force push safely: --force-with-lease 3:38:59 Part 6: Undo safely 3:39:09 The undo map and git restore 3:48:24 git reset: soft, mixed, hard 4:01:51 git revert 4:10:27 git stash and git clean 4:21:09 Which undo command? A decision tree 4:24:03 Part 7: Rewriting history safely 4:24:13 git commit --amend and atomic commits 4:35:56 What git rebase really does 4:45:26 Interactive rebase 4:56:13 Rebase conflicts: ours and theirs 4:59:17 Rebase or merge? 5:03:38 git cherry-pick 5:14:16 Part 8: Recovering from mistakes 5:14:26 What Git keeps, and the reflog 5:24:48 Recover a deleted branch or a hard reset 5:34:43 Recover from a wrong rebase or a bad merge 5:43:59 Recover uncommitted work and a dropped stash 5:52:45 Part 9: GitHub and pull requests 5:52:55 Git data vs GitHub objects 6:01:41 What a pull request is 6:09:07 The pull request lifecycle 6:21:30 The fork workflow and reviewing well 6:31:54 GitHub's three merge methods 6:42:28 Part 10: Team workflows 6:42:38 GitHub Flow, Git Flow, trunk-based 6:53:33 Best practices, review, commit messages 7:00:53 GitHub rulesets: protecting a branch 7:08:15 CODEOWNERS 7:15:20 Part 11: Tools that matter at work 7:15:30 Git tags 7:24:51 Git tag vs GitHub release 7:31:05 git bisect 7:39:13 Git hooks 7:48:47 Git LFS 7:53:33 Part 12: CI and security basics 7:53:43 The GitHub Actions model 8:01:03 Why deleting does not remove a secret 8:10:31 Responding to a leaked secret 8:21:54 Sign commits with SSH 8:28:17 What to do next More from Harban AI Labs: https://harban-ai-labs.vercel.app/