http://www.shadowness.com/v2, click on "Tutorials." Some good ones there.
http://www.tutorialforums.com/, a forum for all Web design-related help.
You can do almost anything in Photoshop, save for 3D and moving video. You just have to know how. I've had the program for a while and am still learning, but I'm not going into Web design. I just do it for fun. I am never satisfied with anything I
make, though, so nothing ever gets released.