This book goes into great details on pregnancy and week by week. I thought it was written very well and easy to follow. It's actually a large book and each page is full of great information. I recommed this to any new parents, or grandparent.
I have several pregnancy books, and this one is the best by far. There have been very few questions I've had that haven't been answered by this book, and I like the fact that the information is direct and to-the-point, rather than the "What to Expect" books, which I felt were a little cheesy at times. As it is written by doctors at the Mayo Clinic, I also feel that the information is trustworthy and medically-sound. Lastly, the week-by-week updates are the most thorough and informative - and fun to read! - of any of the other books I've read.