I don’t often read knitting books cover to cover, but both of Clara Parkes’ books have been an exception to that rule.
The Knitter’s Book of Wool covers the process of making wool yarn from sheep to spinning. There’s a discussion of the different grades of wool, and what makes those grades better for certain types of projects. There’s also a listing of a number of different sheep breeds, and what makes their wool better for particular types of projects.
I’m not a spinner, so I haven’t delved into the differences in fibers as much as a spinner might, so this was all new and interesting information to me. I definitely recommend the book to anyone that wants to learn more about choosing appropriate yarn for projects.
There are also a number of different types of projects included at the end, several of which have landed in my Ravelry queue.