You are buying a downloadable PDF file of the book here for $4.95. If you want a paperback copy of the book follow this link to Amazon. The cost on Amazon for a paperback copy is $9.95. This guide contains the Preparation portion of every lesson in the LDS church manual for the Old Testament. Each Preparation section is followed by a discussion of the doctrine and principles for that lesson. The object is to help broaden your perspective of what can be found within the chapters from the Old Testament being studied. This is especially helpful to those who are preparing the lessons, studying the chapters of the lessons, or serve elsewhere during the Sunday School hour and cannot attend the Gospel Doctrine class.