I'd suggest to just start reading. If you know what size/type of bus you want (full-size, short, skoolie), then start poking around in those sections.
Otherwise, I'd just start on the home page, in the "recent threads." Just see what people are talking about. If it looks interesting/you see something you like, then go back and read the thread from the start. That's an easy way to see what everyone else is doing.
Also check out the "skoolie life" and "everything else" forums - there's a lot of general discussion there.
Also, if you can post a bit more about what you want to do, people can chime in with a bit better/more detailed advice to point you in the right direction(s) on what to look at / research. It never hurts to just spend a few minutes, and come up with an idea of what you want to do (forget the technical stuff for a minute), and people can help point you in the right direction.