In terms of using Yocan UNI Pro, if you are a newbie, please read it:

Make sure to vape distillate anywhere from 2.0-2.5 volts to ensure the best cloud and the best flavor!
Live resin and others should be hit at 1.8-2.2 for the same reason.
Normally preheat it for about 5-8 seconds by double-clicking to preheat and double-clicking again to exit the preheat mode, it warms up the oil a bit and that first hit is amazing! Try not to take any blinkers to often since that will burn and waste your oil.