It's rare for me to watch anything in youtube that isn't a live performance by favorite musicians or, if necessary, a repair how-to (if I can't find a written tutorial which I much prefer). Typically, I can't stand to just listen to someone talk or wade through useless splash screens, "intro," trying to find nuggets of useful information embedded in long stretches of....well... not useful stuff.
Now that I've said that, I watched the entire first video, and even paused and replayed a couple passages more than once. One of the best examples of clear, efficient ground instruction I've ever seen. Extremely useful. Outstanding, Thank you for posting it, and to Doug for allowing his wisdom to be shared. Will watch the second one in short order.