Thank god for Google - I searched for tutorials and made my own leather and metal textures. They came out pretty kickass, personally. :) The chainmail I did by hand, though, that was a bitch and a half.

I don't have Photoshop - I'm using Gimphoto, a Windows port of Linux GIMP, which is a close enough clone of Photoshop (and free!). I've no idea if those brushes will work for me. :/