I second the last poster's suggestion to go with the 30 Day Low Carb Diet Solution. It's been very helpful to me, and I just let my Mom borrow it and she's liking it too.

I have the Lifeplan book and the original PP, and while I enjoy them immensely, once you know the science behind it you don't really need them anymore. Well, I do go back and read for enjoyment, but I don't need them for my daily meal choices. The 30 Solution book and the Low Carb Comfort Food Cookbook are the ones that I've been going to for meal and snack inspiration.