Instructional videos are such a mixed bag. Setting aside the people who don’t know as much as they think they do, and the people who can’t write their way out of a wet paper bag (because those are problems with text instructions also), the basic problem with video is that it moves at the rate chosen by the producer. (Yes, I have software to play videos at multiple times that, but not everybody does.)
However, some things involving physical manipulation are much easier to learn when you can see it being done (for many learners; we vary).
Here, for example, is Alton Brown showing how little you actually have to do to “butterfly” (or “spatchcock”; where the heck does that come from? Apparently Ireland, then Anglo-Indian, and the OED dates it to 1785) a turkey. This lets you cook a turkey in less time (the video begins by geekily making the argument that he needs to double the surface area to cook it in the time he wants), less space (especially, less tall space), and also it lets you put a much bigger pan of stuffing under it to collect the drippings (he uses vegetables, silly man).
And he does it in under 3.5 minutes. (The fact that it’s well-produced also helps of course.)
WARNING: the Food Network’s ads come in hugely louder than the actual video, and hugely too loud, so be prepared to be blasted when you click “play” there!