On VHS actually - the negative is like a talked through version of getting your personal film speed and development time dialled in. Fred wrote a nice little book on the sbject that I was familiar with before the video came along, that I thought did a better job.
The printing one was the best. Very informative, if you have never gotten into a lot of dodging and burning. Some of the effects that Fred goes into with a multitude of 3 second exposures can be avoided , in my opinion, by a bit of dodging while split grade printing.
The lets go out with Fred and his camera video I got the least out of.
Come to think of it, I think I have passed these on to David White.