What are some good ways to buy cheap used books?

Weekly yard sales frequently have books available for very little money, and classified ads often specify that books are among the available items. Among the best regular local resources for used books are thrift shops, including chain stores such as Goodwill and Salvation Army and smaller, independently owned stores.

Online resources for cheap used books include Amazon.com, which allows independent merchants to sell used and new books within their own listings at reduced prices, sometimes for as low as a penny. In addition, many smaller e-commerce websites sell used books of all kinds for less than most brick-and-mortar used bookstores.