I had enjoyed Bruce Aidells' sausages from the store, but didn't like paying USD $5.00 for 12 oz, so when I saw this book, I decided to try the recipes. The recipes for sausage are tasty, as are the recipes involving sausage, though it's not as good as some on the actual physical making of sausage.
"Bruce Aidells's Complete Sausage Book : Recipes from America's Premium Sausage Maker"
It's fairly new and in print, and seems to be a good place to start.