Thought this was some decent info to share.
Number 1 rule:  NEVER use a belt-style harness!  --alway a 4 point.  You'll find one with every treestand you purchase with the TMA stamp.
The first link is demonstrating the use of a lineman's belt/rope.  Nearly all 4 point harnesses have this capability.  Use this to hang stands, steps, etc...
 http://www.youtube.com/watch?v=a3U2Mvp9EME 
This link demonstrates the use of a climbing system using a Prussic or climber's knot.  This is the one thing I want my Hunter's Ed participants to KNOW how to use.  70% of falls occur while climbing, or transitioning from steps to the platform.  Simplying tying off once you're on stand is not good enough!
 http://www.youtube.com/watch?v=h6OiBv1fR_0 
Hunt Safe!