I think hunting around and looking at several different videos (there are a great many, some are better than these) helps. I disagree with you that not having resources or having imperfect videos makes it impossible to learn this. Because people don't like to spread it around that their horse is lame, there is always going to be a little bit of deception ('he's not lame he's just...he's...the sun is in his eyes!'). We can sift through that. The more you think you can't do something, the more you can't do it.