Well, trust me, I HAVE read the owners manuals from front to back, and I've learned a lot more from the videos! There's something about watching someone do it as he explains what he's doing that makes it much clearer, regardless of the brand name on the kb.
I feel it's important to watch them in order, as some procedures are the same, but in a different menu, so they don't re-explain them. Rather, they just refer to the previous portion of the video.

I think both are needed; one for easier cognition for some, and the other for in depth reference.

...like when you've forgotten everything you just watched on video 15 minutes ago .

chas