GitHub serves as a version control platform for individuals and teams to store and track project changes. It's a key tool in modern software development, competing with services like GitLab and Bitbucket. Developers use it to collaborate, manage code history, and avoid conflicts when working together.

To begin, you must configure Git on your local machine. This involves setting your user name and email, then initializing a repository in your project directory. Creating a README.md file is a common first step to document the project's purpose and usage for other contributors.

The core workflow involves adding files to the staging area, committing changes with descriptive messages, and pushing code to a remote repository. Authentication is required for the first push, typically via SSH keys or a Personal Access Token. Regularly pulling updates merges changes from collaborators into your local work.