I've read two birth books that I can suggest.
1. Thank You, Dr Lamaze by Marjorie Karmel.
This one was well-written and fun to read. I liked her take on birth and her honesty about how she felt before, during, and after.
2. The Official Lamaze Guide: Giving Birth with Confidence by Judith Lothian and Charlotte DeVries
I thought this was good read (although it was a little mid-wife and home-birth heavy for me). It was honest, but not scary about everything.