I would suggest reading
Protein Power as your second low-carb book. It will provide a good, solid understanding of low-carb theory and address some practical matters.
Another good read it
The Schwarzbein Principle by Diane Schwarzbein, M.D. Actually, she's opposed to diets as low-carb as Atkins and Protein Power, but her plan is moderately low-carb just the same. And very high fat.
I won't try her plan till I'm ready for maintanance, but I found her book fascinating. She's an endrocrinologist and she describes a lot of metabolic processes in depth. (But at a readable level.) In fact, I think her arguments and reasoning better support Atkins or Protein Power than her own plan.
The one I would
not recommend to a newbie is
Thin For Good by Fred Pescatore, M.D. While it may be sound plan nutritionally, he doesn't even attempt to explain why this works. Instead he focuses on attitude adjustment. I'm all for having a good attitude but he seems to be fixed on the idea that I'm cheating all the time. I don't cheat, and he goes on and on telling me to stop cheating. Annoying.
I'd also suggest staying away from
The Greenwich Diet by Carlin Colker, M.D. His plan is based on a specific, expensive brand of protein powder, which he wants you consume 3 - 4 times a day. Otherwise, his plan is Atkins' without pork. (He never explains his grudge against pork). He also recommends expensive vitamins by the same brand and expensive fat-burning pills (some call it legal speed) made by the same brand. And guess what? The book is published by the same brand he pushes throughout the book. Do I believe him when he says he doesn't profit from the sale of that brand's products? No.
You'll find you can get most of these from your local library system.
Allison