Something weird here the author has two books with the same ISBN but different titles and publication dates. Not surprisingly, the publication quality was poor of the one I used, Tai Chi Chuan Art of the 60 Movements Yang Style Short Form.
The step by step instructions are detailed but at the same time not helpful. They are difficult to follow- at least for me, a novice. They are written to be read as you do them, which is impracticable.
I found Wayne & Furst’s Harvard Medical School Guide to Tai Chi more helpful.