Sorry about the corny title ;-)
I bought this book as it promises simple information about the practical training aspects of Jian - the Chinese double-edge straight sword used in Taijiquan.
The book delivers. The information is as you would expect from a high-level practitioner of the Internal arts, factual and (no pun intended) to the point. If you want to expand your library this book is a worthy addition. If you wish to expand your knowledge then practice is the only way, but aided by essential viewpoints of different teachers it will be less illusive and more illuminating.
The authors (plural) are by Chiang Tao Chi (Author), Petra Kobayashi (Author), Toyo Kobayashi (Author), all accomplished students of the Arts to whom I would like to extend my thanks and sincere wishes for their time, dedication and unswerving efforts to preserve this knowledge.