“It didn’t exist in the late 60s.”
Right. That’s why I said you probably wish it did. :)
“I was perfectly happy to pull out repair manuals.”
That’s me. I’d much rather READ a manual than watch a video. My brain learns better that way.
Youtube has saved me much trouble for certain issues. My wife purchased a new semi-auto pistol. After a range trip, it was time to field strip and clean. Surprise! It has a very long, snaky spring inside. Nothing simple like a Glock or S&W. The magic solution to getting it back inside was to use a cleaning rod from a .17 caliber cleaning kit. The rod can be pushed through the front of the frame and the snaky spring is then pushed over the rod and guided back to where it belongs in the frame. Simple if you observe and follow the technique.