I never thought I would say this, but the movie in this case was better than the book. I understand that the book was written in a climate where women were seen as objects and lesser beings, but seeing men talk about beating their wives with such nonchalance was extremely unnerving. Furthermore, the women in this story are caricatures; they are either sluts or hysterical.
I also believe that there were far more sub-plots than necessary. For example, there was no need for there to be such a focus on Johnny's story because he was quite an unlikeable character and I found myself skimming through his arc. 
The writing was very good and visual in nature, but I wouldn't recommend this book and (I can't believe I'm saying this) I think everyone is better off just watching the movie.