The Korean martial art of Hapkido is an advanced system of self-defense designed to provide its practitioners with viable tools to defend against even the most aggressive of attackers. Within the pages of this book are presented in-depth understandings of Hapkido's self-defense arsenal. Also detailed in this book is how Hapkido utilizes the internal energy of Ki, in addition to Hapkido techniques for the use of the Hapkido Cane, the Staff, and the Sword, also known as Kumdo. There are over three-hundred photographs presented in association with the techniques detailed in this book.