Travel - go anywhere or everywhere, take notes of the strange places and people you meet and write until you can't any longer. That's really all there is to unless you have other motives (perhaps you are reviewing local restaurants or something.) Try to find the unique, the beautiful, the things that make any given area interesting. try to find things that aren't being talked about. Maybe there's a museum of haunted dolls in your area, who knows! I'm in the process of writing a book about my 74 day journey across all the Lower 48 States and honestly that writing came the easiest of anything because it was happening to me. All I did was observe and jot it down. I didn't think anyone would want to read it but apparently there are a lot of people who find such things interesting. Good luck!