thank you!

i appreciate that you would share what has obviously taken much time and effort to learn and i know that i am not the only one that feels that way.

i am stopped on rendering right now, so it is my first priority to understand the material you've provided and i look forward to learning something in a new area.

for me, it's nice to have something specific to work on when learning new things instead of just the overwhelming mass of information available. at least i find that to be true in programming.