Git

Global setup:

 Download and install Git
 git config --global user.name "Your Name"
 git config --global user.email js@lastlog.de
 Add your public key

Next steps:

 mkdir nNull
 cd nNull
 git init
 touch README
 git add README
 git commit -m 'first commit'
 git remote add origin git@github.com:qknight/nNull.git
 git push origin master

Existing Git Repo?

 cd existing_git_repo
 git remote add origin git@github.com:qknight/nNull.git
 git push origin master