Yeah, its popular in the sport dog world. Some interesting concepts but fairly self explanatory for a lot of it. The resource guarding stuff is interesting. If you are doing a lot with your litters already then probably don't need it, but it was an interesting watch.
A lot of what is in Puppy Culture is what good breeders are doing anyway. The exercise guidelines are absurd. I don't have them handy but it is no where enough for most puppies.
The exercise thing is an interesting one. My vet told me that for small dogs the 5 mins for each monthof their life was rubbish, but for bigger dogs you had to be careful. I think as owners we know our dogs Ben is now 2 years and two months. we usually walk about five miles a day he seems happy with that