The 2002 version, Dr. Atkins' New Diet Revolution book, is the one I used to get started. I've read the original '72 version, too, and the biggest difference I find is that with the newer version you have two weeks of induction versus just one week with the original. However, you can immediately include a much wider variety of vegetables in your diet versus very restricted salads in the original. I was happier and more comfortable jumping right in with a higher percentage of vegetables and less meat.