If you're into pre-Columbian and Mexican history this is an excellent choice to add to your collection. Written by Alfonso Caso, who directed the findings at Monte Alban and was the former director of archeology in the National Museum of Mexico, the man knows his history. The Aztecs and all their rituals , including the Gods and calendar are explained in easy to read language. The text is not overburdensome with highly specialiazed jargon but is eloquent and to the point. This book is an easy read. The illustrations are worth the price of the book alone. They are by Miguel Covarrubias, one of Mexico's finest illustrators at the time, and he does a fantastic job depicting the colorful Aztec world. An essential book for anyone intersted in exploring the Aztecs.