On the airplane, in my office, at the movies, in the grocery store. There are informative videos on
youtube. You must watch them to learn which model is best for you and how to use it. At the rate you smoke, don't pass GO, move directly to a Silver Bullet or Omega, with two 3 volt battteries. AltSmoke.com sells those two models. I get other supplies from LiquidXpress.com. No more tar and other carcinegetic additives for me.
Skin rejuvenating products recommended on Dr. Oz today.