This book covers, in appropriate detail, the entire grading syllabus for Shotokan Karate. On its own just a formal reference describing what is required for each grade is very welcome.
Where this book really shines is the descriptive text and accompanying pictures that really illustrate the requirements for training and grading up to 1st Dan (Black Belt). One note of caution; I would not use this book as an exclusive source in Shotokan Karate martial arts...actual structured training in a Dojo is still required.