Hmmm... tough one. I remember having some in my bookmarks quite some time ago. Also got the very basics in an ebook. Let's see if I can find some decent links again.
Edit:
Woo! Found
TheForger's again. That one was one of those in the bookmarks.
Some guy's notes from class (Powerpoint & PDF)
Reliable Software's tutorial, another one from in ye olde bookmarks.
Edit:
Added those to the list.