The book covers only a few complicated join, most of the join are very common and can be easily found in any wookworking book or magazine. The book shows a good collection of jigs. However, lacking of detail drawing do not help in making these jigs. Most of the time I have trouble understand what the piece look like or what angle in the drawing I am looking at. With a little more detail drawing or explanation, this book would be worth to considered otherwise I would not recommended.