A guide book a book that has information about a person, place, or thing they could be used as a map to show someone where to go around the area. Maps also do that they have keys to show if there's a mountain or a river in the area that you are in some maps show the whole countries and its keys are hot and cold climates also shows mountain's and giant lakes a guide book is like a map it can have keys, useful information, and directions throughout the area you are visiting.