Git Intro

What is Git?

Git is a version control system — it keeps a timeline of your project. Every commit is a snapshot you can revisit, compare, or branch off. Think of it as a time machine for code and docs.

What is GitHub?

GitHub is a service that hosts Git repositories and adds:

• Collaboration (issues, pull requests, reviews).
• Automation (GitHub Actions).
• Hosting (GitHub Pages — what powers this site).

There are alternatives: GitLab, Bitbucket, Gitea, SourceHut…. We’re living on GitHub because it’s the standard, and GitHub Pages makes publishing easy.

First steps

When you create a repo on GitHub, it shows you a block of ready-to-use commands (init, add remote, push). Copy those into your shell the first time. After that, your daily flow is just:

git add -A
git commit -m "message"
git push

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