Sheard repositories for a university course whit my friend
git checkout -b "Name_of_the_branch(Can_not_have_space_in_the_name)"
git status
git add path/to/change/files
git commit -m "What_you_have_done"
git push
Then it will tell you that you need to type git push --set-upstream....
Then go to github and go to this reposotory and click compare & pull request
Add me as a rewier and click creat request
Then before you make new changes do this
git checkout master
git pull