"Masterclass: Anal Sex" by Charlotte Webb is a hardcover book published in 2007 by the Erotic Print Society. The book, with a length of 5.8 inches and a width of 8.3 inches, contains 128 pages of erotic photography and sexual instruction. The author, Charlotte Webb, explores the topic of anal sex in a visually engaging way, making it a valuable resource for those seeking to expand their knowledge and skills in this area. The book's format, language, and illustrations make it a compelling read for those interested in exploring the realm of eroticism and self-help.