I think you are right about art tutorials, the magazines of Dan
seems to be the best, i just hope he will put some
texture epainting tutorials to do amazing textures on animated models.
For shaders why not ?
Perhaps in HLSL code that is more easy ot understand than assembly code.
With very simple tutorials, that could become more complex,
the inconvenient , it would need a maths tutorials before.

Well , i just wait for the next AUM to red it with pleasure as always