Yeah, it seems that I should clarify something:
So I am able to use my computer, because I use Screen Reader, I use Screen reader in my mobile phone to. You can check how it works by yourself. If you are interested in, just go to Settings in the main screen of your phone's menu, find Accessibility, then turn on the Talkback and you will see what I am talking about. Yeah, I can do the coding, however within B4A there are some things that seems to be inaccessible, and if I can't figure how to handle one or another thing out by my self, I need sighted people to help me sometimes. For example instead of using B4A Editor, I use just a simple Notepad, because main Editor seems unfrendly for my Screen reader. But on the other hand, as much as I have been searching for, I have found, that B4A is mostly friendly for me and I hope that in the future it will be more and more accessible, because there is only way for me to do apps for Android. I write my design logic directly in the activity's code, because I can't use designer in confortable way. Other things, like icons and so one and so forth as well need to be painted by sighted people.
About the videos, I don't know anyone such about that, however you can try to search it in Google, I am mostly sure, that you are able to thing something interesting to see.
But if you want to know some aspects of our life more deeply, then I thing there is a wrong place. May be you can send me a private message.