So, I have never vaped before and I have a e-power on the way. I got the starter kit and 4 dual coil cartos and 30ml or juice. What do I need to do to get started? I'm kind of at a loss at what to do when it comes in. I've watched videos on how to fills the carto and everything, I guess I need to know if they need to sit for a while after filling, or can I just screw them on and start vaping.