Ok, so there are some good tips in this book, but overall, it actually made me kind of angry! It's written almost to say that your relationship is doomed from the start, so here's what you need to do to cover yourself. I read about half and gave up because I wanted to kick the author. :)
This is Cosmo in book form complete with quizzes. If you are in a serious, committed relationship ten to one you will have already discussed everything in this book. This book is more for shacking up to due to convenience with no actual long term plan in place. It also seems to be written for a young audience (early 20s post college). For those who go in not knowing if they'd want to get married or never to marry, this book is for you. For those shacking up to find out if they should get engaged, you're better off with 101 questions before you get married. Not this book.
It has some handy tips, however, about money or shared purchases. But it will simply just tell you to A) Do not get a joint banking account and b) don't make any large joint purchases unless you are willing to give the item up to the other person. It even suggests having legal documents drafted in case of a break up to divide your stuff! Such an odd book.
The book handles real life scenarios in an honest, truthful and funny way. It also mentioned things I hadn't considered, having never before lived with a significant other on a permanent basis. I sincerely recommend this book, even if you're one of those women who has the world on a string and people kissing your feet because you're just that wise and wonderful. Nobody knows it all.