This whole series is really useful. I have several for specific cities & the latest one for Iceland. They are frequently updated to ensure info is current & relevant.
Includes, history, sights, currency, laws, medical , how to get around, hotels, restaurants, stores/shopping, customs and more.
They are particularly handy due to their small size so easy to carry with you & I always use the maps provided inside detailing specific city streets, location of attractions & rail/metro/bus routes.
They are popular with my friends & family who raid my library to plan & take trips & I can honestly say every one of them has been a great help. ( )