You can buy a book at a bookstore.
You can buy a book at somewhere like WH SMITHS if you live in England, if not then i'm not sure. The only thing i can suggest is eBay.co.uk where youcan get some bargains of books on there like $0.99 or £0.99 either one you use. Like I said if you live in England you could go to borders, waterstones, WH smiths and im sure they're are alot of book stores in the town near you. Hope this helps you regards Priceyg
If you live in the USA you can visit Amazon or Barnes and Nobles stores, here are their websites they are the best book stores: