I am writing a story. The story takes place in a fictional world and there are hundreds of places to explore and tons of different characters to write about. I want to write a separate, sort of spin-off book about it. An official guide book, sort of like a big travelers brochure. I only have a few things to write about, though. I dont know what to include. So far, I have the separate bios of all of my characters, the menu in their favorite restaurant, and a look inside everyone's homes. What other essential things am I missing? Just name anything you would include.