There were a lot of ways to approach this goal, but since I couldn't seem to find a convenient class nearby that covered what I wanted, I looked for some books. After searching on the internet and in book/art stores for a few weeks, I ran across You Can Draw In 30 Days by Mark Kistler. I purchased a few other books, but this one seemed like the best (read that as "most basic") place to start.
|Kistler: Lessons 1 & 2 - shading & depth with spheres|
|Kister: Lesson 3 - more spheres & textures|
I'll post more of these and then keep you guys up date as I progress. Deal?