>>5227332Protip
Fundies are really early stuff, once it clicks it is all a matter of practice, it doesn't matter who you learn it from, it is basically a 1+1=2.
You will not stunt your growth by looking at the wrong person for that early on.
Spending years trying to find the perfect book or resource is the worst thing you can do.
Art is representing 3d space and objects in 2d through an imaginary z axis receeding into the center, the vanishing point, you are not shading, you sre lighting, everything is reflecting or absorbing light.
The rest is pretty much self study, and you can get pointers from this or that guy.