Shannon, if you get the paperback, not only will it be cheaper, but you'll get much more updated information.
DEFINITELY get the book and make sure you've read it before you start, okay? It's essential, IMHO. It looks long, but half of it is recipes. You need to understand why you are allowed to eat somethings and not others in order to plan your meals. It's really imperative.
If you plan on buying it online, check the sticky in this thread about buying from Amazon...if you use that link, part of your purchase price will go back to the chicks to help them keep this site going.
Glad to hear that you're joining us, hon!