If you go to the Newly Diagnosed Board on the forum you will find dietary advice. It is basic advice but will help you understand what you should be doing.
I was referring to this - more or less the same but in an easy to follow structured way! I am about to start - having been recently diagnosed it seemed a good idea to follow some sort of diet to get used to a new way of eating! I'd love to hear what you think http://store.mayoclinic.com/products/bookDetails.cfm?mpid=134