For me personally, this book was not as helpful as Babywise, but it does have some good information.
This book has good info if you're a first time parent AND have NEVER been around kids in your life. Very very basic. I wanted it to teach me something I didn't know. Chap 5 was pretty good and also the chapter on potty training. Other than that, it left A LOT lacking.
I felt like this book gave me great advice on how to raise my strong-headed 20 month old. We've been applying some of the principles and really think they are working with her.