This half hour video was probably a real monster of a thing to approach. Likely a massive effort of preparation and testing and planning to pull it off so well.
What is obvious is the two best things about your thinking are you ability to plan and your ability to deliver wisdom and information. Now... make it easier on yourself... take advantage of that planning ability to break things down into bite size chunks of wisdom and information and make short little explanatory videos on just one piece at a time.
IF you want to make more tutorial videos. I can't imagine the pain and work involved in putting this massive video together.
Instead, think of something that's really useful and necessary, then absolutely isolate components of that activity and do a video on each.
Handling touch is just one example of this sort of thing. How do to do it in one way, that's one video. Another way of doing it, do another video. Don't put them all into one video. Just consistently put them out... use your planning ability to step them nicely in difficulty and challenge, intent and purpose, and then use your delivery skills to nail each one and sequentially put them up.
But that's a big IF. I think the world is very fortunate that someone of your talents and calibre has decided to make one tutorial. If you do more there should be at least some effort made to promote them, because they deserve a much wider audience.
And I think you've nailed it in terms of an interesting subject. Sprite Kit is fascinating.