Moxa is a different way of stimulating acu-points to needling.  It doesn't use needles but distal heat.  
 
Two people may attend the tutorial as you may wish to treat each other.  For example, if you have a painful back, your moxa friend could apply the moxa for you.  After training with me you will be able to safely self-treat from your home.  Some of the benefits of moxa include:
 
ease arthritic pain such as OA of the knees 
ease back pain
 
Visit here for more information about moxa.