Git is referred to as a distributed version control and source code management (SCM) program. What this means is that it is a fancy way to store and share your programs with other people.
First, let's think what the problems are with regular backups? Suppose we are doing a group project. How would you share code among your teammates? You could email each other the code but it would get tedious very quickly. Also, what happens when you make some changes that turn out to be wrong and you have to go back to a previous working version? These issues can be resolved with a SCM program such as Git. Git is one of the more popular SCM's.
GitHub is a popular website that host projects using Git and it also provides other services such as project management (issues), web hosting, etc.
Okay, so where do we begin? Let's first create an account in GitHub.