Reddit mentions of Whole Beast Butchery: The Complete Visual Guide to Beef, Lamb, and Pork

I really like Whole Beast Butchery by Ryan Farr for this. It’s got tools and cuts laid out visually.

Aside from that I suppose you could look up cuts on google images, but those are going to give you, at best, your primals. Those are important but not the be all end all of butchery.

Whole Beast Butchery is a pretty good resource, it doesn't have a lot of in depth diagrams but it shows you how to break down Beef, Pork, and Lamb and has lots of interesting recipes that are non-traditional. Each step has high resolution pictures and also gives easy to follow instructions as to what is going on in each frame. The only things it doesn't cover are poultry and fish, and things like rabbit or small game. It was a really good resource for me as I was starting out! Hope this helps!

http://www.amazon.ca/Whole-Beast-Butchery-Complete-Visual/dp/1452100594

This was a lot of fun to make and was perfect for feeding a small group. I took the recipe from Ryan Farr's Whole Beast Butchery book, available here.

I like that book. It gives good info on a little bit of everything. It doesn't really provide thorough detail of any breakdowns I found.

For animal breakdowns I like Whole Beast Butchery.