I occasionally check out what Interweave, the magazine publisher, is offering in the way of tutorials. Their tutorials are ones that have been published previously in their magazines, but, if you’ve missed them, you can pick them up on the cheap from the website. (I just got a nice earring tutorial for just under $4.00)
I seem to be on Interweave’s mailing list, so I receive chirpy mails touting tutorials from time to time. You can sign up for the newsletter as well, or just go to the website and look around from time to time.