Clinton Anderson has a great way to teach them: you have a horse on an extremely long lead rope or lunge line and put it through a tie ring, not tying it. Wave your arms, be as scary as possible so the horse freaks out and tries to pull away. Eventually the horse will stop, after pulling the rope out a bit. Then, you bring the horse back in and loop the rope around the tie ring again, causing more friction. This time, when the horse pulls back, he can still run away, but with more friction. They will usually stop sooner, too. You repeat these steps until the horse is securely tied and stands still, not caring about the scariness.
“Have fun - Stay on top.”
"There's nothing like sixteen hands between your legs"