Well, some are perhaps more advanced but I think what I like is that the tuts in the VIP section are more inclined to go through entire projects from modeling to setting up texture maps to lighting to final render, thus giving an overall workflow. As far as difficulty....I don't think that's much of an issue. Look at the sword modeling tutorial or the tie-fighter or the 3 point lighting. The only things I see as being more on the advanced side is the monster head, UV mapping, and maybe some of the dynamics (not so much that it's hard to follow directions, but more that they may demonstrate advanced concepts that take awhile to digest).