If you are thinking about spinning, interested in fiber arts, or just want to know where yarn comes from then this is a good book! It does get technical in places, but if you want to start spinning some technicalities come in handy. I really enjoyed this, the author spoke of her own experiences as well as things that she does differently. While she looks at all aspects, there are places where her bias toward methods is obvious but ignorable. The glossaries and resources pages are great, it is good to have a definition when she starts talking about rolag and batts, she does define them in the text but something else to look at is nice too. The illustrations of each step are wonderful, it might as well be a ‘how to’ video in spots.