If you feel like sitting through an hour lecture, I recommend watching this (but open it up in a bigger window):
<embed type="application/x-shockwave-flash" src="http://www.youtube.com/v/dBnniua6-oM
If you feel like sitting through an hour lecture, I recommend watching this (but open it up in a bigger window):
<embed type="application/x-shockwave-flash" src="http://www.youtube.com/v/dBnniua6-oM