We are very happy to see you.
This is hosted on Github Pages. That means that whatever is in the gh-pages branch goes up onto http://www.rgwgtn.com (it takes a few minutes to go up there though).
Let Merrin or Kelly know what your github username is and we'll add you to the group so you can push to this repo.
Alternatively, make a fork and explore the exciting world of pull requests.
By default, you'll be in the master branch. To change branches, you go like:
git checkout gh-pages
I have this page of the git documentation bookmarked: http://git-scm.com/book/en/Git-Branching-Basic-Branching-and-Merging Seriously. So good. You'll love it