I bought this book (version I) shortly after taking up fly tying and it helped. I thought the problems and solutions section for each fly really supercharged the book's value. Interesting to see the price has gone up $5 with the new version.
I also wonder how many more fly tying books the world needs these days. But I bought Charlie Craven's Basic Fly Tying last year and am glad I did. The book has a lot of really helpful tips and tricks included in the instructions. I suspect, though, that it will be my last fly tying book purchase. There is just too much really good info available for free on the Net.