While I always use Rick Steves travel books, if there are other books that I could use to plan my trip, please respond.
Thank you for your suggestions.
A lot depends on where you're going and what you're looking to do. I like the Rick Steves books but they are curated so there may be places you want to go to that aren't in his books.
I like the Rough Guides myself as I think they're very comprehensive and they will take you to places that are more off the beaten path. Lonely Planet is another one that I've used before and it has a lot of information in it. And one of my favorite guidebooks are the Bradt Guides published in the UK. They have a lot of books in their collection that you won't find anywhere else.
You really can't go wrong with any of those.
Beyond the RS travel books. I like Eyewitness travel and sometimes when I have gaps, I like Fodor's.