E-cigarettes are sometimes known as vaporizers or vapes for short. These electronic devices turn a glycerin-based liquid called e-liquid or e-juice into a flavorful vapor that you can inhale. E-liquid comes in both nicotine and non-nicotine varieties. It also comes in a wide range of delicious flavors. Here are four steps you can take to get the most out of your first e-cigarette. 1. Purchase a high quality e-cigarette. Not all e-cigarettes are made alike.