https://www.youtube.com/watch?v=Ybx9JEuu7Hg&list=PLuHgQVnccGMA8iwZwrGyNXCGy2LAAsTXk&index=9&t=0s ====================================================================== # To specify the member who writes versions, run git config --global user.name Name git config --global user.email Email If you commit, the project has new version which contains information of author. ====================================================================== # Run with writing commit message, which means new version is created git commit ====================================================================== # To see various infomation about commit git log ====================================================================== # You edit source file and run git status You will see the message like "modified" You can't proceed "commit" in this status You first should add f1.txt file into the list for which git tracks version by running git add f1.txt When you create a new file, to let git to track version of this file, you should first use git add When you create a new version from the file which is being tracked in version, you first should use git add Then, you can do git commit