Editor Reviews:

Product Description:
Not all yarns are alike. Some make our hearts and hands sing, some get the job done without much fanfare, and some cause nothing but frustration and disappointment. The gorgeous pair of socks that emerged from their first bath twice as long as when they went in. The delicate baby sweater that started pilling before it even came off the needles. The stunning colorwork scarf that you can’t wear because the yarn feels like sandpaper against your neck. If only there were a way to read a skein and know how it would behave and what it wanted to become before you invested your time, energy, and money in it. Now there is! With The Knitter’s Book of Yarn, you’ll learn how to unleash your inner yarn whisperer.

In these pages, Clara Parkes provides in-depth insight into a vast selection of yarns, giving you the inside stories behind the most common fiber types, preparations, spins, and ply combinations used by large-scale manufacturers and importers, medium-sized companies, boutique dye shops, community spinneries, and old-fashioned sheep farms. And, because we learn best by doing, Parkes went to some of the most creative and inquisitive design minds of the knitting world to provide a wide assortment of patterns created to highlight the qualities (and minimize the drawbacks) of specific types of yarns.

The Knitter’s Book of Yarn will teach you everything you need to know about yarn: How it’s made, who makes it, how it gets to you, and what it longs to become. The next time you pick up a skein, you won’t have to wonder what to do with it. You’ll just know–the way any yarn whisperer would.

Rating : - someone explains felting to me
The more you know about yarn, the more yarn you need. I thought I knew a lot, but this book really clears it up for me. I don't know that I need to own this one, but it's surely a worthwhile read.