This book is a very low-level introduction to jodo, primarily Shindo Muso Ryu jo. It definitely won't provide good enough instruction to learn any of the basic techniques or kata, and it isn't very comprehensive, only useful for the extreme beginner while they're still in the beginner stages. The book also only covers the forms chosen for the Seitei Jodo set, ignoring the traditional form sets. A much better book would be the book "Jodo: the Way of the Stick" (aka La voie du baton, I think, the book is split into both English and French sections), which provides a much more comprehensive set of explanations, techniques (covers omote, chuden, and ranai: the Seitei forms are miscellaneous kata chosen from these sets), and background on SMR jodo and budo in general.