Well, I've been vaping over a month now on cig-a-likes but just got my "real" kit last week. I was happily vaping along and then the Independence Day, July 4th coupons started showing up on the forum. I was able to get some really good deals on e-juices which I needed. But, then I saw a beautiful k100 for a really good price and I got one. I also got the Nitecore IntelliCharger i4 Charger and some flat top IMR batteries for it. Of course, then it wasn't so inexpensive but I told myself that I will really be saving the money by using the replaceable batteries vs the ego type batteries. Only now, I realize that I don't really know what to do with it? For example, I read somewhere not to let it discharge less than a certain amount. How am I supposed to know when it's getting close to that amount. I've been using evods on k-go and winder bats and they are really easy to use. Will they work on the k100? They have replaceable heads in the 1.8 and 2.5. So, if I'm understanding correctly, I should use the 2.2 or 2.5 heads? What have I got myself into this time? I have been proudly bringing my vaping stuff out with me so that my friends and anyone else might ask me about them and then I get to tell them how well vaping is working for me vs smoking my stinkies. Only now, if I blow up my k100 in my face, they'll think, "Wow, I'm not going to try that vaping thing, look what happened to her." Please help, it will be greatly appreciated.