This is the first book I purchased when I began to learn to spin. Although in the beginning alot of it was over my head, in the 5 or so years that I have been spinning now I have read this book many many times, and used it for quick reference often. Every time I read through it I pick up something I missed before. Amos's humor takes the edge off of learning something new. Although he does go into detail on the chemistry of scouring, and the physics of the twist, this may be very useful to those most serious about their art, however these sections ar easily skimed over for those who arnt. The plans for tools in the back do require someone with woodworking experience, as Amos states in the beginning. I like having them anyway because you never know when you will meet someone like that. Not the only book you should have, but, definatly should be part of you library.