Really great information!
The books is set up chronologically for puppy developement phases, but I found it important to read the later chapters up front. There was content at the end that applies to early stages and it illuminates the goals behind some of the early exercises.
A little more guidance would be helpful to distinguish what skills/exercises are important for companion dogs compared to competition dogs. For example, the book instructs you to teach the puppy that it should not leave an open-door crate until a verbal release cue is given. That seems unnecessarily-complicated for a pet, even though the general self-control exercises are generally-applicable.