Following are the steps
git clone YourRepoAddress
make some changes/add files to the repod folder
git status
git add filename for single file or git add . will add all files &
folders which are new/modified
git commit -m "Your Commit Message"
git push origin master
That's it
Ref : http://stackoverflow.com/questions/7908381/struggling-with-git-cannot-push-to...
