Git is a version control system that records every change to a project, letting developers track history, revert to earlier states, and collaborate without overwriting each other’s work. GitHub hosts these repositories online, offering backup, public or private sharing, and a platform for team collaboration.

Installing Git Bash on Windows, macOS, or Linux is the first step. After downloading, run the installer with recommended settings, then configure your identity with `git config --global user.name` and `user.email`. Next, generate an SSH key using `ssh-keygen -t ed25519`, copy the public key, and add it to your GitHub account under Settings → SSH and GPG keys.

With your local repository initialized via `git init`, you can stage files using `git add`, commit changes with `git commit -m`, and push to the remote by adding an origin URL (`git remote add origin <ssh‑url>`) followed by `git push -u origin main`. Pulling updates is as simple as `git pull`, ensuring you stay in sync with teammates.

Mastering these fundamentals unlocks a smoother workflow for beginners and seasoned developers alike. As you grow comfortable, explore branching strategies, merge tools, and continuous‑integration pipelines. Community resources, such as the official Git documentation and GitHub Learning Lab, provide deeper dives into advanced features.