a.k.a. HSHHC I HIGHLY recommend this book to all Mom's if your baby is over 3 months old. Before 3 months it's hard to predict sleep paterns effectively, but after about 12 weeks, you can clearly see the pattern if you know what to look for. This book isn't a schpiel about making the baby cry or anything like that, it simply shows you the signs to watch for and how to know when to put the baby down BEFORE they become so overtired they can't fall asleep. I used this for my twins and it saved me, only wished I had known about it for my DD.