Git and GitHub: Introduction
A version control system is a useful tool that keeps track of changes to files, including code and text documents. These systems are also crucial for collaborating with other people and merging changes while you work on the same files. Git is a popular modern version control system that is widely used, free, extremely fast and very capable. GitHub is a hosting service for git and a platform for collaboration. Come learn the basics of using git and GitHub.
Source Link: