I forget these steps frequently, so I thought I’d post them.
These come from Github’s new repository page. For the purposes of this, [repo] is the repository name and [user] is your github username.
Next steps:
mkdir [repo]
cd [repo]
git init
touch README
git add README
git commit -m 'first commit'
git remote add origin git@github.com:[user]/[repo].git
git push -u origin master
Existing Git Repo?
cd existing_git_repo
git remote add origin git@github.com:[user]/[repo].git
git push -u origin master