The chapter on feedback is particularly helpful, and applies way beyond feedback on public speaking. The “diamonds and spades” cards framework is a helpful framework for processing all kinds of feedback to pick out what is most helpful and what to do with it. I also got a lot out of the practical preparation and now know much more about microphones and AV!
Definitely worth reading if you are interested in public speaking. Or, if you aren’t – at least you’ll have a better idea of what you aren’t subjecting yourself to!