git add . stages all changed files, while git add README.md stages only the specified file. Also, git status is used to display the current state of the working directory and staging area.

Learn how to merge two branches in Git. There are multiple ways to merge code in Git, including the Merge command and Pull Request.

Inside you will see a README file, which verifies that the clone operation was successful. Next steps would include creating new files in your Git working directory, adding those files to the index, ...