I bought Traveler's Tool Kit because I loved Guatemala and am considering a trip to other countries in the region. The book told me everything I wished I'd known on my Guatemala venture and I need to know to choose which other countries I want to see. It's specific about itineraries, costs, food, health, safety and available adventures.
This is really two books for the price of one. Beyond Central America, it contains comprehensive information and advice that I can use to travel anywhere in the world and deals with the obstacles that keep many people from enjoying the rest of the world - like money, time, safety, and health. For example, instead of listing a few of the "best" hotels in some city (advice that can become outdated almost overnight), the authors explain how to find good lodging anywhere, anytime. Since knowledge is power, this book makes the reader king.