What Are Git and GitHub? The Difference Explained

Short answer: Git is a free tool on your computer that records the history of your files, so you can save versions, undo mistakes and work in parallel. GitHub is a website that hosts Git projects online so you can back them up, share them and collaborate. Git is the tool; GitHub is one place to keep what Git tracks.

What Is Git?

Git is a distributed version control system. Version control means every change to your project is saved as a step you can return to, instead of files named final_v2_REAL.py. “Distributed” means every copy of the project holds the full history, so Git works offline and nobody depends on a single server.

What Is GitHub?

GitHub is an online platform for hosting Git repositories (a repository is a project folder tracked by Git). On top of storage it adds collaboration features: pull requests, issue tracking, code review and automation. Alternatives such as GitLab and Bitbucket offer similar services, and all of them work with the same Git.

Words You Will Meet

• Commit: a saved snapshot of your project with a short message.

• Branch: a separate line of work, so you can try something without touching the main version.

• Push: send your commits to GitHub. Pull: bring others' commits to your computer.

• Pull request: a proposal on GitHub to merge your branch into the main one, so others can review it first.

Your First Commands

Create a repository on GitHub first, then connect your local folder to it (replace the address with your own):

git init
git add .
git commit -m "First version of my project"
git branch -M main
git remote add origin https://github.com/your-name/my-project.git
git push -u origin main

git add chooses what goes into the next snapshot, git commit saves it, and git push uploads it. After that, a quick git status shows what has changed.

A Typical Teamwork Flow

1. Pull the latest code, then create a branch for your task.

2. Make small commits as you work, each with a clear message.

3. Push the branch and open a pull request on GitHub.

4. A teammate reviews it, you fix any comments, and it is merged into the main branch.

This loop keeps the main version stable while everyone experiments safely.

Why AI Learners Need Both

• A portfolio: a GitHub profile with a few clear projects shows what you can build, which words on a CV cannot.

• Safe experiments: AI projects involve a lot of trial and error. Commits let you go back when an experiment breaks.

• Collaboration: almost every team, and most open-source AI projects, work through Git and pull requests.

• Reproducibility: others can download your code and run it.

Common Mistakes

• Committing secrets such as API keys. Use a .gitignore file and environment variables.

• Vague messages like “update”. Write what changed and why.

• Confusing the two: Git works without GitHub, and you can use GitHub only because Git is underneath.

Interview tip: be ready to explain a branch and a pull request in one sentence each.

Key Takeaway

Git tracks your work on your computer; GitHub hosts it online for backup, sharing and teamwork. Learn the basic loop of add, commit and push, and you can use both from day one.

Practise it step by step in the chapters GitHub Remotes: Push, Pull and Clone and Pull Requests, README and Your First Published Project.

Ready to start? Learn Git, GitHub, APIs and backend basics with hands-on exercises. Begin with the free course Git, APIs and Backend for AI: Beginner.