... For someone like me, somewhat rusty and very unsure of modern materials (i.e. glitzy, ice yarn, micro flash etc) this book is a godsend, two pages devoted to each of 100 patterns across the fly fishing range - it will lie flat on the desk (it is ring bound) everything about the fly and the materials required, including degree of difficulty (and quarry!) is on the first page, precisely how to tie the fly is beautifully and clearly shown and explained on the second page.
Verdict - no beginner should start tying without it, improvers will love it, experts (I think) will enjoy it - buy it as soon as possible.