There are some truly great things to say about Mr. Gathercole's book, "Fly Tying for Beginners." First, it is laid out in a very sensible manner. Starting with tools and techniques up front, followed by a list of flies, all in awesome crystal-clear color photos. The book's size and wire wound binding makes it so easy to use on at the tying bench.
That said, as a novice to fly tying, I found myself going to other resources to research techniques such as tying hair wings. In addition, it would have been MORE helpful (for me) if some of the techniques I needed to use were found in the same pages as the fly I was tying at that time. One other point is that I found myself having to guess several times on tail lengths, hackle sizes,and occasionally material placement.
Overall, I'm very glad to have this book as a reference, but I'm also glad I have OTHER references to assist me with the gaps of information I found missing in this one.