If you want to learn some advanced spinning techniques such as how to spin novelty yarn, you’ll want to buy a couple of these books.
Spinning Designer Yarns
by Diane Varney will introduce you to some more advanced spinning techniques. You’ll find some instructions and illustrations here on how to make slub, core-spun and snarl yarns, just to name a few of the techniques that are covered.
In Sheep’s Clothing: A Handspinner’s Guide to Wool
by Nola Fournier has so much information about all different breeds of sheep wool that every spinner will want it in their library. This book will give you the details you need to know about the distinctive characteristics of the wool from all the sheep breeds you have heard of, and probably a few you haven’t, which will help you decide what type of wool would be right for your next project.
Intertwined: The Art of Handspun Yarn, Modern Patterns and Creative Spinning (Handspun Revolution)
by Lexi Boeger is for the spinner who is interested in spinning novelty or art yarns. Lexi also gives some great suggestions on how to use these unusual yarns in projects.
Color in Spinning
by Deb Menz will show you how to dye or blend fibers for different color effects. Deb presents some helpful information about color theory in an easy-to-understand way, then goes on to give some good examples on how to put this knowledge to use in your spinning projects.
Creative Spinning
by Alison Daykin will inspire anyone who wants to spin art yarns. The book is organized by fiber type, and gives you some good ideas about what techniques work best with what fibers.
The Alden Amos Big Book of Handspinning: Being a Compendium of Information, Advice, and Opinion on the Noble Art and Craft
is considered by some to be the spinning bible. As you can probably tell from the title, Amos is very opinionated (for example, he seems to disapprove of the double-treadle wheel), but he knows his stuff. If can get past his writing style which can come off as rather condescending at times, you’ll find a lot of solid technical spinning information here.