This study set is intended for use with audio CDs or DVDs. It includes everything a participant needs to complete the 20-part study. This set includes a workbook and timeline chart. The workbook guides participants through their study of Church History with thought-provoking questions and responses, detailed maps, charts, historical studies, biographies, and much more. Each lesson is designed to be followed by the corresponding talk from the DVD or CD series. With The Epic Timeline Chart Church history is systematically divided into 12 color-coded time periods to aid in remembering and applying what you've learned.