Just finished reading Lee Jones’ excellent Winning Low Limit Hold’Em. In my opinion, the book doesn’t necessarily make any huge breakthroughs. What it does is it formalizes a lot of the internal rules you will develop while grinding at the low limit tables (if you’re even remotely a serious player) in a clear, concise way without going through the pain and agony of losing your bankroll. Even if you have gone through the pain and agony, it’s a good idea to read and reread this book so that you can use its lessons on conscious and unconscious levels.
You can get Lee Jones’ advice for free at CardPlayer.com.