I make mine using a 1/16 drill bit. I use 32 gauge kanthal wire, which I preheat with a lighter so it holds shape better. Then I ......ah heck, watch some videos! It will give you a way better idea of the process than reading about it. I will say that I prefer cotton over silica. Try as many ways as you need until you find what works for you. I would recommend Mount Baker Vapors for an inexpensive liquid that is still good quality, or DIY juice, which has a great subforum here.Your voltage setting will be the output of your device while your wattage setting will take resistance into consideration and adjust accordingly. The wattage setting comes more in handy when you frequently change coils with varying resitance levels. Kinda a simple explaination, but I am sure you will get more feedback from folks with a lot more knowldege than myself.