This book is full of photos and detailed and clear descriptions of the moves. I plan to use the book a great deal and work the moves into my yoga routine. Even so, I'm not sure that it would be enough for someone who has no yoga experience. Also, I was looking for recommendations about other yoga moves I'm more familiar with (eg, "Don't do the cobra" "the cat is great for pregnant women") and it wasn't there.
I highly recommend this book to women 14 weeks pregnant and on. I actually took yoga classes with Francoise in Cambridge, UK during my second pregnancy. The preparation was exquisite and prepared me and baby for a glorious childbirth experience. The book is well organized and easy to read so that you can prepare for a natural birth as it is meant to be. No one can predict a birth experience, but this book helps to take the experience into your own hands and avoid medical intervention.