If you are a thoughtful person who cares about things — which I feel confident you are, because you are reading this post — you will love this book. The basic idea is that our gatherings are uninspiring as hell, but instead of doing the work to make them better, we stick with our routines and habits, often because we're too shy to change things up, or because we don't think it matters. But they DO matter and we CAN make them better!
This book is the perfect mix of practical tips (don't start or end a gathering with logistical announcements); smart ways to think about gathering (hosts must get comfortable with the idea of having power/being in charge, and should rule their kingdom with generous authority); and cool anecdotes about great (and terrible!) gatherings. It's also just a really breezy read (like a long great magazine article). I highlighted so many things while reading it, and have been raving about it to everyone I know this year. And, true story: I recently attended a friend's absolutely marvelous Christmas party and she told me the next day that everything about it was inspired by TAoG.
Get it from Amazon for $16.99+, Barnes & Noble for $16.99+, or your favorite local bookseller through IndieBound.