This is a book of hopefully total fiction. It adds to the movie AVATAR by giving some of the background of the story and some great details about the things you see in the film. For example, page124-125 gives the details of the Pseudocycas altissima - A cycad on Pandora that is very similar to Earth's cycads. The na'vi name is tsyorian'wll or "flour seed plant." It goes on to give general description of the plant, it's habitat and uses. You will also learn more of the Hammerhead Titanothere and the Great Leonopteryx.
Let's hope Earth never gets to the state that it is in at the time of the movie.
203 pages including the Na'vi - English dictionary.