If you’ve surfed the Web more than once, you’ve probably visited Amazon.com. Originally you may have gone there searching for books, but Amazon.com is so much more than a bookstore. The author of Amazon.com For Dummies®, who has been involved with the site from its beginnings, describes it as a shopping mall/home improvement store/bazaar/travel agency/newsstand/car lot, but most importantly, a community of buyers and sellers—people like you. Countless opportunities exist for those who join this...