Could someone recommend a good rendering tutorial?

I can sort-of stumble through the basics of Rhino OpenGL and Cycles rendering, but I barely understand the advanced features.

Ideally I’d like a tutorial with practice examples that deals with architectural rendering. If it addresses Rhino OpenGL rendering and Cycles, that would be great, but I’ll adapt anything that lets me learn and practice.

The Rendering section on the Learn page includes some architectural tutorials: