I'm new to this forum and don't really know where this goes. I've poked around the safety, new build, forums etc. But I haven't found too much information to get me started. I quit smoking using a 20$ ego kit at a local shop in a period of about 6 months. My friend has built a box mod, for rediculously cheap. About 10$ for everything, he opened it and showed me what's going on. He just has a battery, the switch, and the 510 in a hammond box. I wish to build something like this too but the thought of hooking batteries straight to the 510 scares me. I want to be able to regulate the power. So I need a chip, right? Does the mosfet count, or what even is that. Anyway the point of me starting this post is, I need help getting started. I don't want to injure myself, and a few days all over google and youtube gave me little info. What counts as regulated? Is regulation required for sub ohm? Can I get like a picture or diagram of how I would keep me or my batteries from being damaged. Any information would be appreciated.