Alan is master of the skew. He's got great videos (available at Woodcraft) and his instructions are pretty easy. You can find more at: http://www.alanlacer.com.
Alan is an excellent wood turner, who is a master of the skew chisel, he gives lots of demos and has several videos. In my opinion, he is the best with a skew.. You can find more information about him and his videos at his web site http://www.alanlacer.com/