It’s not easy to get your book(s) into libraries, but your library-utilizing fans can help by putting in a request. To facilitate such support, be sure to post library request forms on your website, blog, or print copies if you’re at a book signing or other event. Forms must include the ISBN as well as your book’s distribution channels. Library’s cannot purchase the book directly from you, so it needs to be available from one of the distributors from  which they can order. Note that many of the larger libraries now have ebooks as well.