Once initialized in a folder, Git allows you to save or commit a file to that folder after you changed it. Without Git, you might stoop to making explicit copies of a file you’re working on and misusing its name to represent the version such as myFile-v01.html and myFile-v02.html. Instead, Git will assign a commit ID to each commit. Going back through all your commits is easy; just open or check out the version you would like to see. Usually, you don’t just version control a single file but many files living in different project folders. The root folder of all the key files you want to version control, the one you initialized Git in, is called the Git repository.