I can model decently, but modelling alone is not very effective in terms of presentation...I want to learn how to make shaders! I keep finding very cool shaders, but nobody says how they made it! I don't want to use pre-made materials for various reasons, I want to learn how to make mine, which keeps me from getting serious about my work..Up to now, I haven't found a consistent guide about shaders and mr materials..is there any tutorial/book about the various shaders, utilities and mr materials?