This is exactly what it sounds like: a comprehensive guide to gamemastering advice. The book walks the reader, step-by-step through all the roles the gamemaster takes on, all of the players they will encounter, and all the pitfalls that can trip up even the best gamemasters. Each section details advice on how to deal with disruptive players, shy people, slow adventures, boring plots, and bad habits that follow you from game to game. The book compiles over 40 years of gamemastering after attending over 100 game conventions with hundreds of strangers with some of the worst behavior you've ever seen, including other gamemasters who forced me to walk away from their tables. The book even talks about how to avoid those situations in the first place, and how to correct those behaviors if you yourself are one of those types of gamemasters.