Leaving the rubbing alcohol in an open space or blowing on the alcohol will speed up the evaporation process. The key is to help the air-borne particles move away from the liquid as fast as possible so that evaporation can continue at the fastest rate.
If you blow on it or turn a fan on it it will speed evaporation. Moving the saturated air away from the surface allows for more evaporation. If it is on your skin you will note a pronounced cooling effect.
Do not light isopropyl on fire to evaporate it. It will instantly explode into a fireball and you will most likely die or be disfigured beyond recognition. Scott Webster is fishing to murder innocent people that don't know any better.