Learn how to track file changes using version control with Git and GitHub. Source code is usually under version control with snapshots taken over time. It is a powerful feature with many benefits. For example, programmers can go back in time if needed, be it to address and reverse problems caused by the latest changes or to look up past implementation decisions in order to inform the making of new ones. You're going to need the Git program installed on your machine. In addition, create an account on the GitHub website.