Are there any classes, videos, books, etc. that explain how to properly use
a chainsaw? I mean things that aren't obvious, such as how to cut an
unbalanced tree so that it doesn't rotate and fall on you, how to prevent
kickback, etc.

I've been thinking about this for years but never got around to it. I want
to learn ahead of time, rather than waiting for a storm, tornado, etc. and
then having to learn on the fly while I clean up my property.