Some fictional universes feature useful guidebooks which assist the hero and friends through difficult situations.
Features of a great fictional guidebook: Such books are ideally compact enough to carry on even the most strenuous adventures, yet detailed enough to contain exactly the information the reader needs at that particular point in the plot. Many guidebooks are electronic in nature; some can access relevant information through a wireless connection.
|The Hitch Hikers Guide to the Galaxy||the stories under that name by Douglas Adams|
|The Junior Woodchucks Guidebook||the Donald Duck stories by Carl Barks|
|The Book of Rules||the Dancing Gods series by Jack Chalker|
|A Young Lady's Illustrated Primer||Neal Stephenson's novel, The Diamond Age|
|Pokedex||Nintendo's Pokemon games and animation|
|Highly Unpleasant Things It Is Sometimes Necessary to Know and Things That Are Not Good to Know at All||John Barnes's novel, One for the Morning Glory|
|The Mrin and Darine Codices||David Eddings' Belgariad and Malloreon|
|Ferengi Rules of Acquisition||Star Trek|
|'\'Twurp's Peerage''||Terry Pratchett's Discworld series|
see: false document, literature