The fascination of the Book of Revelation, which tends to increase with troubled times, especially towards the end of a millennium, is justification for a whole volume of the Howto Read series to be devoted to its content. The result is a new and fascinating approach to Bible study. The author offers five 'keys' for understanding the book, derived from study of its background and content, and then applies them to interpretation of the most famous chapters of the Apocalypse. Having learned this approach, readers are then in a position to understand the material not covered in detail.