Buy this book, ideally before you get your pup, but if not, as soon as possible afterwards. I bought this book well before our new arrival, and had the crate and pen already set up before she came. I didn't follow it absolutely religiously, however am pleased to report that our pup is nearly 10 months old and hasn't chewed a SINGLE incorrect thing, which I find astounding given the destruction we suffered at the hands of other pooches over the years! She is also crate-trained and always sleeps in her crate (with the door open now, and often with the cat for company!) using the crate as a 'den'. We occasionally shut the door on her to keep her used to it (handy for vet appointments if they get taken in). From thinking crates are cruel, I'm now a big fan, and can't understand why others having issues with their pup just won't try it. If we ever breed our dog, when the deposits are handed over for the pups, the new owners will be handed a copy of this book.