Step 2: Fork the Lug Newbie-Week repository.
The *.tex files contain the slide content. Everything else is not that important.
run scons
to build the presentation to make sure it looks good in evince.
For viewing the slides, I highly recommend setting page at once, and not continuous in you pdf viewer.
Just refer to the Forking guide.
The pull request lets me review code and merge you additions into the mainline to share with eveyone else.
Github has a lot of great resources for git beginners. http://help.github.com/