I've been following for a while two of the (IMHO) most important Blender resources around: Rendering With Blender and Modeling With Blender.

Those videos are the material used by professor Claas Kuhnen on his Product Design classes at Kendall College, and show some very important concepts and Blender techniques.

Besides its focus on Product Design, those concepts and techniques can and should be used in other fields, such as animation or architectural visualization. Whether you are an experienced user or a novice one, I'm sure there are some good things to be learned from those videos.

The links for these resources are already on my favorite list on the right side.

:)