Below are some of my YouTube channels, mostly devoted to education -- I love teaching.
This is my most popular YouTube channel.
I teach people how to solve the Rubik's Cube, from beginner's to advanced methods, and also how to solve it blind, with one hand, etc.
Popularity: ~9000 subscribers
In this channel I attempt to teach people about how fractal generating algorithms work, but in terms that a layman can understand.
The channel is not too popular, but I did not expect too much, given that I teach math :)
Popularity: ~300 subscribers
I upload my programming videos on this channel. I also recently started tutorial series on Game Programming in Python.
Popularity: ~100 subscribers