Jim Burns wrote:
Much of this work will be done by yourself or practicing on willing
victims, empty chairs, stuffed animals and or blow up dolls, so this
will not be expensive.

Jim,

I don't know what kind of airport you fly out of, but the guys at the FBO
always give me funny looks when I go out on the ramp with a blow-up doll.

Seriously, though, being a CFI is all about teaching, and almost
nothing about flying. Learn how to explain things carefully and
correctly. Learn to pay attention to your student to figure out if
they're getting what you're saying, and if not, try another approach.

In the airplane, learn to shut up and sit on your hands most of the
time. The hardest part about flight instruction is figuring out where
the dividing line is between the just plain ugly and the truly
dangerous. You want to let your students get up to that line, but not
cross it.

Also, learn to know when they've had enough. There reaches a point
where the student's brain is full for the day and they're just going
through the motions without any real learning going on. That's the
time to say, "let's head back", and maybe even take the helm for a
while to give them a breather.