I believe you can actually rent Covell's videos on some web sites.
Along with a lot of other dvd's on stuff, After watching a couple of idiots with a case of beer, a vid camera,a pencil and a cardboard box for drawing on. With the air compressor running as background music and the sunshine washing out picture, when they point the camera in the direction of the windows and open garage door. You will be glad you rented some and did not spend $89.00 on them.
But it is a good deal, Just read all the reviews as they tell the truth