The DVD and Study Guide are helpful in a group setting, especially if participants have different levels of interrest and participation (if all are not keeping up with readings the DVD keeps them in the loop).
The material is quite thought provoking and is stimulating good interaction. The study guide has limited use due to its length; too much busy work. The videos are well presented. Would have liked to seen more videos for more chapters. Length of videos just right to open the subject. Materials work best with having the book as well.