San Francisco bookworms find that this bookstore's selection has a little bit of everything. The independently-owned Green Apple Books offers a great selection of new and used titles broaching subject areas such as cooking, art, travel, history and children's literature, and they are happy to buy books to add to the extensive collection. Beyond books, the store also sells new and used music, a huge selection of DVDs and gifts like notebooks, cards and magnets. Once you've looked through all of their books and music, head outside to lively Clement Street, a very popular shopping stretch for locals worth exploring.