Pull Code from a Repository git clone http://{server/repository.git
Add Files to Local Repository git add *
Status of Local Files git status
Commit Changes Locally git commit -m "Adding new files"
Commit Change to Remote Main Branch git push origin master
Refresh Local Files in Case Other Updates Took Place git pull origin master
Creating a development branch git checkout -b develop origin
Push new branch back to the server git push -u origin develop
An excellent and more detailed quick reference guide is located here and cheatsheets here.
A great article on managing versions and releases is here