I'm certain that this is an excellent book. In fact, I know it is. However, it also decides that drowning you in 99% useless information is a good technique, with the tendency to repeat some of the important parts in case it (as very likely did) get lost. The last legal book I read covered all of this very concisely within a chapter and very few new ideas are presented here.
However, should you desire some need to fully understand this area (especially since 90% of it only applies to stock photographers), this is your book. Just don't expect the obvious: no firm opinions, no sample model releases, no guidelines on when to use and not use one.
Rather, the book seeks to educate you so YOU can make those decisions. Wise perhaps, but in the end a rather fruitless pursuit since the reader very likely did NOT pick up the book expecting this sort of educational tactic.