I've just seen the video and I think it is great! I really like the way you coment your code and how you thought on doing the presentation in general. I'm just a beginer, but I feel I understand most of what you said.
Having said that, one thing I still don't quite understand is the MVC design pattern, and reading on your comments here, I feel quite lost. At the moment I'm just doing things so I get the apps working, but I keep feeling I'm not doing things correctly. The problem with this is when I come back in a few months, maybe it will be hard to read my code (not that I'm really going to do that, I hope I know much more than now). The point is that I think the understanding of the MVC is important for readability and reuse, specially if working with other people.
All of this is to say that if one day you feel bored, could you make a video on MVC

? Well, either that or could you point me were to read to better understand it all?
Thanks and keep up the good work!