This is written in a very approachable way, with plenty of real life case examples. It is very encouraging and opens your eyes to opening a way of communicating with your baby, and providing it with an alternative to poo in its nappy.
It allows for three approaches, full-time, part-time and occasional EC, so you don't need to go gung-ho doing this all the time, it also doesn't expect parents to give up on disposable nappies, some people have done this method using disposables, this book is quite laid back, its all up to you.
I also got the Linda Sonna book, and the Laurie Boucke, and prefer this one overall, the style of the Linda Sonna didn't appeal to me. The Laurie Boucke, Infant Potty Training is good as well, but the Christine Gross-Loh book is more contemporary.
Additionally since I wrote the above I would like to say that my baby is now no longer wearing nappies at night or during the day at 17 months. We started using cloth nappies around 5.5 months and the potty. My toddler is able to come to tell me through signing of the need to go, and that is what happened at 13months. At 17 months we decided to do away with nappies and these are no longer worn any more at all. I found the book very inspiring and it kept me motivated.