The paperback book (updated on January 10, 2018) has 170 pages with over 400 photos. The e-book version also contains 15 minutes of video demonstrations of E Tai Chi exercises. The E Tai Chi sequences demonstrated by the author can be watched on YouTube: E Tai Chi (the introduction) https://www.youtube.com/watch?v=8SpGNjAtxPwE Tai Chi (the basic sequence) https://www.youtube.com/watch?v=QjbVILwHwCYE Tai Chi (the intermediate and advanced sequences)https://www.youtube.com/watch?v=Medo50cBNEc...