I would of bought a 100w mod, 60 is limiting you with the 0.3 coil, jumping in like this when you have a wealth of info and guys and gals here is crazy to me. That 0.3 ohm coil fires best at 70 to 80w, that's where the flavour really starts to come out. You have bought it, not even knowing how to vape it, you wont be able to mouth to lung this and your 50/50 maybe to much of a throat hit, Id recommend higher vg, if your nic level is higher that 6mg then be prepared to feel sick and dizzy too.
Start with the 0.5ohm coil, your mod is in better range with that, vape between 20 to 30w, you shouldn't get a dry hit either way. Personally, I would of advised a different tank, the Kanger SUBOX Mini Starter Kit would of been more ideal with your lack of knowledge and understanding of sub ohm but hey, we will of course help you along the way.