Mark's book is what got me started, but the website has more info that you could digest in a lifetime. I'm a member on the forum too but a lot of the people are so snarky I don't ever post.
Also check out RobbWolf.com Lots of good info and a good podcast and CavemanDoctor.com it's a relatively new site so there isn't the volumes of info but the guy is a Radiation Oncologist and really does his homework with his posts. They also have a podcast that gets put up once a week.
Adam I don't know if you saw this or not
http://www.marksdailyapple.com/gout-primal-paleo-diet/