How to Soften Wool by Megan Goodacre – Tricksy Knitter
Wool is a wonderful fiber, and can do things that other fibers can't: Wool is warm and stays warm even when wet. It is resilient and doesn't break. It takes dye beautifully and can be spun in any thickness. It's a great yarn for the beginner knitter. It (can be) inexpensive to buy. It's renewable. And if you keep it safe from wool moths, it can last a very, very long time without changing.