Like others in the Campfire series, Zeus and the Rise of the Olympians begins with a page introducing each of the major characters and ends with a page or two of general information on some topic that should be of interest to the young reader and perhaps spark further study. In this case, there is some discussion of the Olympic Games, a bit about Greek architecture with examples from around the world, and some information about words derived from the Greek gods.
Other books in the Campfire Mythology series that could be of interest are Stolen Hearts: The Love of Eros and Psyche. The Legend of Heracles, and Jason and the Argonauts. While there are some adaptations of mythological materials from other cultures in their catalogue I haven't yet seen them, but if they are as well done as the Greek myths, I would imagine they would warrant some attention.