You have it right Harry
I think you understood what I meant about the videos. The one thing about any course you take is the hands on experience of taking it apart and putting it back together and learning the feel of the parts and how they interact. If you don't have the guns the course teaches you about, you won't get the full benefit of the video.
The one thing I have always told anyone that asks me about the video course that I bought is I am blessed by the fact that not only do I have a pretty good size collection, but so does my Father and Father-in-Law. The only gun that was in the course that I didn't have access to was a DA S&W 45ACP. The thing was, my Father-in-Law was a factory trained smith for this pistol since he was the pistol smith for the State's game wardens so he still had all of his class materials from his classes. The rest of the guns on the course, I had one of them to break down and clean up and fix anything that I could find that needed fixing. Most of the time, all I would do was break the gun apart, clean it, lubricate, and put it back together. This was the same job I had when I was working for another gunsmith doing the disassembly and polishing for blueing. Let me tell you, the videos sure made that job a lot easier to do when one came in that normally I would never had fooled with before.
With all of that said, all the videos and books will ever do is give you a basis of knowledge. The hard part is wrecking a couple of guns learning exactly how the gun works and how it goes together. Believe me when I say that you will ruin a few along the way, but most of the time whatever you messed up can be fixed by someone, even yourself if you let someone show you how. I know I had to learn to hard way a couple of times. Hands on working with the guns is miles ahead of looking at a video or reading from a book, but they can all work together to help make the learning process easier. I have a rather large collection of gunsmithing books as well as the video course and I still learn something new about everytime a gun comes in. I learn from places like this forum as well as other websites. No one will learn it all in one book or video, atleast I haven't anyway. I have been doing this kind of work seriously for about 8 years now and I don't know half of what I will know in 8 more years. Good luck with it.