I ran across an old Perspective tutorial that I made several years ago. Believe it or not, for quite a while this tutorial was ranked #1 when you typed in “Perspective” in Google… till I lost my old domain name. Anyways, it seems woefully outdated now, and basically only deals with 1-point (and sort of 2-point) perspective. But if you’re just getting started, its a good description of how to think of perspective in terms of creating a scene for a comic. I know it helped me a lot when first demonstrated to me by Brian Stelfreeze many years ago.
At some point, I intend to do more tutorials. Hopefully this will help a few people out there in the mean time.