First of all well done for this book, I think it is worth every penny. The big advantage is that this book is not necessarily only for GMs, but also for players. A lil Preparation is obviously necessarily in RPG, (I mean what did you expect : even improv shows needs some prep!) but it can be done largely around the table. The book is full of little subtleties applicable by everyone which makes your game more interactive. I repeat myself but it focuses on the players : I think it's exactly what RPG needs right now : let them do "your" job, it's more fun and exiting! Some reflections about plots are used by great screenwriters and improv comedians (notably the “what if” method or "the alphabet"). Sometimes we have a lot of theory in these kinds of books but here, each theoretical piece is illustrated by a lot of examples in play. The least interesting for me is the “puzzle” or "trap" part that I rarely do around my table, but to be honest, it made me want to try.

In conclusion: Those who expect miracle solutions, go your way but for others, you can buy it with your eyes closed and that's the best part: EVEN if you are a player!