The Amazon.com Marketplace offers practically anyone an unmatched opportunity to cash in selling old, used paperback or hardcover books. But what titles should you stock up on to resell? The following types of printed books, magazines, and other related printed materials sell very well on Amazon... and what doesn't sell on Amazon can be re-sold on eBay or Craigslist websites: How-To Non-Fiction -- This will be your bread and butter. You'll make more money selling the trade books. Keep a sharp eye of to pick these up. You'll notice them by their size; these measure about 6" x 9" and they usually are 1" - 2" thick. They ship cheaply by USPS standard media mail. The subject matter can be diverse. It's easy to find the following items cheap and resell them online: Music theory & music sheet music books Teacher classroom instruction manuals UFO Abductions Ancient Aliens In Egypt Edgar Cayce books Astrology Biographies of celebrities