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.

Fictional guidebook	Universe
The Hitchhiker's Guide to the Galaxy	Hitchhiker Trilogy (five books) by Douglas Adams
The Junior Woodchucks Guidebook	Donald Duck comics by Carl Barks and Ducktales (tv series)
The Book of Rules	The Dancing Gods series by Jack Chalker
A Young Lady's Illustrated Primer	Neal Stephenson's novel, The Diamond Age
Planetary Guides (annual)	Planetary by Warren Ellis
Pokédex	Pokémon 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 and Wormhold's Steerage	Terry Pratchett's Discworld series
Tobin's Spirit Guide	Ghostbusters
The Spells of Astoroth	Bedknobs and Broomsticks

See also

• false document
• literature
• fictional book
• Archive of fictional things
• List of international travel guides and web sites