A guide book is a special type of book that teaches you about a certain place you might visit and helps you figure out what to do there. It's kind of like having a friend who knows everything about the place you're going and can tell you all the best things to do and see.
Inside a guide book, you'll find information like maps, pictures, and descriptions of different attractions, restaurants, hotels, and other important places. There could also be helpful tips about things like the weather, local customs, or how to get around.
Guide books are really helpful because they can save you a lot of time and frustration when you're traveling somewhere new. Instead of wandering around aimlessly, you can follow the advice in the guide book to have an amazing trip.