This manual is an authoritative reference which gives clear explanations of the basic throws of Judo. It is not a book for beginners because it has so much detail that it could be confusing. For example, there are multiple versions of each throw shown, some of which are quite different from the basic technique. It helps the reader distinguish between throws that are similar, and distinct variations of each throw.
It is best used as a reference for further study of techniques learned in class. It is not really competition oriented, and is more geared to technicians and those interested in understanding the official position of the Kodokan regarding each technique. Only approved Kodokan techniques are shown, and of course no matwork is included.
Reading the other reviews here of Daigo Kudan's work, now released in English by Kodansha, it is very difficult to add to the words of praise for this monumental collection of Kodokan Judo nagewaza. Originally this material was published in a series of Kodokan magazine articles. In fact, the two models for principal photography worked with the author and publisher for eight years.
Kodansha Int'l deserves praise for its commitment to bringing judo books like "Kodokan Throwing Techniques" to students outside of Japan. Most recently, a reprint and updated translation of the coveted Mifune Judan's "The Canon of Judo" was also released, and it is hard to say which book I like best. Both will raise the level of the reader's understanding of the technical and philosophical foundations of Kodokan Judo.
I also recommend this book to those who are involved with other martial arts/sports, including "Brazilian Jujitsu" and "Mixed Martials Arts." A thorough study can only increase their expertise, and they may be surprised to discover that there are few things that are really "new" under the sun.