We have the #explainlikeimfive tag for those who want the simplest answer or introduction to a new subject. This generally is a great place to start learning anything new.
Today I came across a video on the WIRED YouTube channel that reminded me of you guys. It explains blockchain technology not just to a five year old but in 5 levels of complexity. There is a playlist with 6 of these videos.
This is not a bad idea. I propose we copy this and start doing this too.