I have been doing all things at once when i'v got time for playing with common stuff.
After that i can large choice of ideas to go to the upper level with.
I needed some axonometry basics when i started with f.e. a spiral staircase or a star vault with cylindrical visors for gothic church project. Everything is simplest 2D, even Blenders stuff.
- sweet eyes
- monotypes and logos
- classic geometric construction methods
And so on.
By accident i found a quantum physics forum with Hein theory and metroms e.t.c. very fresh research. There was a lot of very wiped animation math stuff. Please don't sugest yourself low quality of free hand painting. It's full hand painting:) with mouse.