This talk is very well done. I wish he'd had a 1 hour slot, but there is still a lot to get out of this even as a refresher. https://www.youtube.com/watch?v=qU-Yxn5hdzM&list=PLA9_Hq3zhoFy5jmj6_Fd2YMuOjsovaIh-&index=24 Brett