Clone a repository
$ git clone url_of_your_remote_repository # Clone a repository from a remote repository
$ git add file1 file2 # will add those two files to the index if they were modified
$ git commit -m "Meaningful commit message" # will commit those two files (locally)
$ git add . # will add all of the modified files to the index at once
$ git commit -m "Other meaningful commit message" # will commit all of those files together
$ git push origin master # send all commit to the remote server