Nearly 200 of the book's 250 pages are devoted to katas, the choreographed forms of karate. There are 17 katas carefully explained and illustrated. I learned some of these 30 years ago. You forget a lot in 30 years - although not so much if it's been drummed into your head enough. Anyway here they are - move by move, good as new. They are great practice tools for when you don't have a partner. Doing kata is a lot more interesting than repetitive drills.
There are about 30 forms in all in the Shotokan style. I only hope that someone does a book someday with all of them. Nakayama has done some further books with 2 or 3 of the advanced forms per book, but I'd like to see them all under one cover some day. However, someone who masters the 19 forms in this book should have considerable skill and power.