If you are like me and fairly new to all of this, it can be rather overwhelming. There are a ton of videos out there, but the vast majority of them are reviews of items that are given to the reviewers so needless t say they all "hit hard". There are some great build ones but rarely do they explain why you should buy/build something do to it's scientific principles. My first few dives into rebuilding where only guided by Riptripper saying this build is "sick as ....", now don't get me wrong I like Rips videos and he really makes me laugh. However I really wanted to know why I should use 24/28/30/32 gauge wire and what it does when I do. Thankfully after lots of time searching I found what I was looking for and needed in explaining what's what's and why. Now I am not promoting for the sake of promoting but rather sharing what has been a great help to my understanding of vaping. Search YouTube for Pegasus1337, he has several class structure videos that sheds a better light on builds/mods/batteries/vaping in general. I hope this helps some that are as lost as I was when I first started.