Git QuickStart for Mac OS X

The Linked Guides Shows You How-to Install and Getting Started with Git Version Control System on Mac OS X 10.11 El Capitan.

The Git Version control is a system that records changes to a file or set of files over time so that you can recall specific versions later.

Every time you commit, or save the state of your project in Git, it basically takes a picture of what all your files look like at that moment and stores a reference to that snapshot.