If you don’t already have one (or don’t want to use an existing personal account) please create a GitHub account with your icfi email address. For the user name use icf- as the prefix, followed by your first initial and last name:
e.g. Jeff Heinrichs icf-jheinrichs
Download & install Git keeping all default settings.
Optional: install the github GUI
Download Xcode (through the App Store). Not only will this install git, it also has a nice file compare utility.
Optional: install the github GUI