The videos from a class the authors gave in 1986 are available online (https://m.youtube.com/watch?v=2Op3QLzMgSY https://m.youtube.com/watch?v=2Op3QLzMgSY). I h

The videos from a class the authors gave in 1986 are available online (https://m.youtube.com/watch?v=2Op3QLzMgSY https://m.youtube.com/watch?v=2Op3QLzMgSY). I highly recommend those, if reading the text is not your style.