One more that I think would be helpful for logo design is http://vector.tutsplus.com/tutorials/tools-tips/quick-tip-how-to-create-a-paper-style-alphabet-using-illustrator-3d/. This tutorial was created by the same author of the previous post, Iaroslav Lazunov

I don't think that you need to create your own alphabet, but the article will give you tips on 3D modeling, symbols, and blends in Illustrator.

For those of you already working with CSS and web design, you might enjoy http://www.noupe.com/tutorial/drop-down-menu-jquery-css.html. Even if you don't know jquery, I think you can apply these concepts to your web design.

He seems to be very talented and very experienced in creating useful tutorials. I hope you can learn something from these.