Linguist Marc Okrand was asked by the producers of Star Trek III, to expand on the Klingon language, first heard in Star Trek The Motion Picture. What came out of the request, not only influenced the feature films, but each of the spin off television series as well.
When the first edition of The Klingon Dictionary saw print in 1985, legions of Trekkers (myself included) wanted to crack the secrets of the language--and the book allowed us to do that. Ater the Klingon race played a substantial role in the plot of Star Trek VI The Undiscovered Country, in 1991, a revised edition was warranted. The 92 edition features the same layout of the other versions. The book takes you from the sounds of Klingon, through all of the different types of words, to an actual mini dictionary of key words and phrases. Okrand wisely didn't try and tinker with the layout though, with tongue firmly in cheek-the idea of a book like this still makes for a fun read. The latest edition has 192 pages and is worth it for any would be Klingon warriors out there.