I was knitting with my buddies a couple weeks ago, and Jenni brought her latest book purchase. The Principles of Knitting. I drooled over it for a few minutes then promptly went home and ordered my own.
This thing puts my college chemistry text books to shame. It's a monster!
It has info on just about everything you would ever want to know in knitting. A great reference for any knitter.
I got mine on Amazon for $27. When the book was out of print I heard that you could only get them on Ebay if you were willing to spend $500-700, so I thought it was best to get one now before this second edition goes out of print one day. $27 is much better that $500. :)