Not the best book on the subject but there are some interesting items. Appears to be based on the authors visit to Japan and has a few gaps. It would certainly aid new aikidoka to learn the basic terminology. It is a pity that many clubs are not using japanese descriptions for techniques, perhaps reading this book would encourage them to do so.
This book is an asset to sensei's especially those with teaching qualifications already or aspiring to teach. There are good photographs and descriptions. If you are looking for very advanced techniques you won't find them here but all the fundementals are there with fairly easy to follow explanations. Peter Hammond 4th Dan Aikido Renshi