Git is a distributed source control system... this means the every git repositories has it's own files with it's own track of changes. In other words, all git repositories has it's own commits, merge, branchs...
As you have your local repository, you have to commit things on it and, after that, you are able to push things to the remote repositoy.
Git allows you to commit remotely in other branchs, but this is no the fun of using git... The main advantaged IMHO it's to have your commits separeted, and push them to anywhere/whenever you want.
So... try to:
git add .
git commit -m "MESSAGE"
git push