justanengineer, I couldn't agree with you more. Excellent book. I had it before I had my first lathe and generally recommend it to everyone. I think several other companies produced a very similar book, I know Craftsman did.
The Fenner videos do show a machinist doing something occasionally that some classic texts say don't do. For instance, using compressed air to clean off parts. But, I've seen in most fields that years of experience sometimes teach one that the textbooks aren't always right.
I also realise that seeing a fellow worker do something wrong but seemingly getting good results is a good opportunity to ask them why. I've learned a few things doing that.
Dave.
I agree to a large extent Dave, but Ive always thought that there really is a bit of a need to be fairly strict when someone is new to anything, simply to keep them out of trouble. Id agree that someone knowledgeable and careful can "cheat" a bit and use compressed air to clean, occasionally set tools directly on a mill table or lathe ways, etc etc....but someone inexperienced might not notice the blown chips piling up between sliding surfaces until the ways are scratched or they might be tempted to use the mill table as a workbench/resting spot for other projects and damage it. The common "rules" in texts arent unbendable by those who know the reasons for them, but if followed they will keep those who dont know better out of trouble.
Dont get me wrong, I definitely agree that others can learn a ton by watching guys like Keith, but I think for the total novice the intro books are better.
When I started working in Tool & Die back in '81, the place I came from always used an air hose to blow off a fixture or parts. So when I started at the new place, I didn't give it a thought until I got my *** royally reamed out bigtime, because I used an airhose to blow off my mill. Good God, you would have thought I banged the guys wife. When he got done berating me, he tied into the others as a warning. I'm standing there thinking WTF
After he left, I asked a coworker who that was. He was the head of maintenance. I was walking down the hall later in the day and he stopped me. I thought, here we go again

He explained to me about using an airhose on machinery and how it can blow minute pieces of grit and dirt into places that you don't want it to be. Once the dirt gets into those areas, it's impossible to get out until it is ground down and the ways start to wear. He took me into the maintenance department and showed be a Bridgeport that was torn down for a rebuild and how dirty it was, and how worn it was.
Secondly, and here come another lesson about blowing off chips and dirt and people. You can get chips in your eye, you can blow chips in others eyes if they are within distance.
After that, I had a new respect for a machine and refrained from using an airhose as much as possible. Not only for blowing dirt into areas where it shouldn't be, but I also didn't want my *** ripped again.
At least at home, I keep a ShopVac between my mill and lathe, so whenever I'm tinkering around with either one, I'll vacuum everything off, then give it a wipedown with a shoprag or two, then a little spritz of WD-40 to help prevent rust. Plus if I use an airhose, it would blow **** all over the walls which I don't want.