https://medium.com/@thecruisy/how-to-set-up-a-new-github-repo-from-your-macbook-fadb6bca2d9a

This article walks you through how to use git as your version control tool for your projects. It is assumed that you have already installed git on your local machine. If you have not, this is how you do it via homebrew:

MacBook-Pro:~ bobthedude$ brew install git