Were you looking at the Quinnster site? They do have some stuff on yarn, under the "Wool" section. I make lots of loose falls, but I'm not into yarn or wool at all. If you wanted to join a forum where you can ask questions about everything hair extension related (yarn and wool too), you could join Heavenly Hair. I'm a member over there, and everyone is extremely helpful with questions.
www.extra-muffins.com/hair