Further resources
Working with Git has the big advantage of having a really huge community providing help for nearly every question that you might have.
Bootcamp, from https://help.github.com/categories/bootcamp/, gives you a solid start into the practical world of Git. It gives you further instructions on how to set up a Git and work with the GitHub user interface.
If you want to go deeper into the topic, you should take a look at the official Git website, http://git-scm.com/. It provides a very detailed reference on all the functions provided by Git.
