The book is full of information you will not find elsewhere, but are you sure you really want to know everything? I'm absolutely sure that it is profitable to know all the possible complications of pregnancy, or to know that the separations are very common among parents of twins. The book takes no precautions to reassure parents, although this is greatly needed. A good example: the book says that "the twins are dépressiogènes", ie they cause of depression. I would much rather advice to help manage these problems. In fact, it is this book that I find dépressiogène.
In addition, the book contains plenty of information useful to my little meaning towards the end. We could summarize this part as the history of twins through the ages. There is even talk of ancient Egypt. I think this is not really the most relevant information to prepare for the adventure constitutes the first months of twins.
Finally, some advice downright shocked me like a sister to attribute to each of the parents, because it's easier to manage. It seems highly unhealthy.
Well, that said, there is not much more to find the information. Read on then, but with a lot of detachment, if you get there. And for me, you can skip the third part.