Don't be afraid of it. It was my first mod ever. My first step into the world of vaping. My first device, period. It was GREAT to use as a learning tool. I suggest you take a quick look at a "safe vaping power levels" chart. They aren't perfect, but they are a great starting point. With mine, I was always using the 2.1ohm iClear 16 clearos and found that the sweet spot to be somewhere around 7-8 watts. I never even bothered with the voltage settings after the first day. I think I played with them for about 20 minutes and decided using watts was easier. I still use my 50w iStick the same way.
I hope you enjoy your purchase, and feel free to ask any questions you have when you get it. We are here and more than happy to help people out.