Introduction to Git

Git is a distributed version control system created by Linus Torvalds in 2005. It's the backbone of modern software development — every change you make, every bug you fix, every feature you ship is tracked by Git.

Why Git?

• Track every change to your codebase with full history
• Collaborate without overwriting each other's work
• Roll back mistakes instantly to any previous state
• Branch freely, experiment safely, merge confidently

Core concepts

• Repository: the database of all your project history (the .git folder)
• Commit: a snapshot of your files at a point in time
• Branch: a lightweight pointer to a commit
• Working tree: your current files on disk
• Staging area (index): changes queued for the next commit

Your first repo

git init my-project
cd my-project
echo "# Hello" > README.md
git add README.md
git commit -m "Initial commit"