I got this book because I am heading out to Cozumel. I've been there before but I wanted some new ideas about places to go and sights to see. The book gives information about how to get there, the beaches, accommodations a la carte and all-inclusive, ways to get around, and fun things to do once you're there. It offers good information on restaurant, national parks, shopping and nightlife.
The book provides information about Cancun and the Yucatan, with all the kinds of information that I listed above about Cozumel.
There are some tips on Spanish phrases and words, good ways to plan your trip, health information, and even airline websites.
I highly recommend this book for anyone traveling to Cancun, the Yucatan or Cozumel.