If you are interested in leather and how to tan hides, pretty much any animal hide you need to check out Plaeo Planet. It is a forum and has tons of tutorials for tanning. There are tutorials for using brains to tan or others for using acorns. Tutorials for the smoking and just about any part of tanning hide that you can think of.
The Ultimate Guide to Skinning and Tanning: A Complete Guide to Working with Pelts, Fur, and Leather