After spending about three hours searching for tutorials (and finding some unsavory spamilicious sites) I discovered this page. It's got a whole boatload of tutorials for everyone else that may be interested. The most useful ones that I've found so far were about blending multiple images together to create one (Steampunk and blending.)
And then there's THIS
one for creating a "typography poster," which I plan to basterdize when I go home to make a cover.
My eyes are open and I am in love. Now to play later.