Git and GitHub

General

• Using Git Bash requires a basic understanding of the command line.
• The Git & GitHub Tutorial for Beginners (2026) focuses on using Git at the command line.
• Learn Git Branching is fantastic tool for visualizing the effects of Git commands. See the Git and GitHub module for which levels to attempt.
• Documentation on GitHub often takes the form of Markdown (.md) files and these are automatically converted to HTML. Markdown is easy to learn; start with this beginner guide.

Working with the Commit History

Core Knowledge

• Understanding atomic commits - watch up until 3:34.
• WTF is a detached HEAD?
• What is a merge commit?
• How to resolve merge conflicts in Git.

Advanced (for interest only)

• How to keep your Git history clean with interactive rebase is a good article. Alternatively, watch the YouTube videos below.
• Rewriting Git history explains how to amend, reword, delete, reorder, fixup and split commits. Commits can also be squashed (combined).