Although it's not too old, my copy of Rossel's book is dog-eared and stained. That's because it lives not on a shelf but on the work bench in my shop. I refer to it, and Rossel's earlier book, frequently. Building a boat involves hundreds of small tasks, some of them a bit tricky. Because many of those only come up infrequently, it's easy for even the relatively experienced amateur builder to need a little help remembering how it's done. This book is perfect for that.
It is equally well suited to the beginner. I wish it had been around when I first started messing around with wooden boats. It really is the next best thing to being a real life apprentice to a master boatbuilder. If you can't build a boat with the help of this book, maybe you should consider taking up golf, or some other hobby.