Awww I love my pit bull too!!
Besides that.... The first biggest step is checking out our FAQ Section and this thread
for the basics. You'll start out in Phase 1 where you will hopefully lose a nice chunk of weight before moving onto Phase 2. We have tons of recipes in our recipe forum to choose from. If you want to purchase the book, I recommend either buying it online at Amazon or you can get it at Barnes & Noble. I bought the paperback edition for about $16.95 at B & N. It's also handy to get a highlighter and highlight the things you think will help you the most.
Personally I recommend getting involved with the girls here on the board. If there are a few days that go by that I don't post for some strange reason I slack off. Ruth usually makes a Phase 1 thread so that people can post their menus daily. I'm sure the same can be done for Phase 2 if needed.
I hope this helped. If it's needed I'm alway avaliable to chat.... just shoot me a private message!