Fair enough. I am not really a cloudblower, but I have a Fishbone and a Dark Horse that both throw serious steam on my Snow Wolf when cranked up above 60 Watts or so. I am really a flavor chaser. My favorites there are the Aris Pro by Council of Vapor and the Sapor by Wotofo. Batteries are very important. That's a lot of energy compacted in a very small space and, when mishandled, bad things can happen. Very bad things. For a new vaper, I strongly recommend a regulated mod; that's one with internal electronics to make wattage selection possible on any coil, and they are much safer. It all depends on how much power you want, there are many possible choices. Good brand names for removable battery mods are Cloupor and Sigelie, among others. I have an Asmodus Snow Wolf 200 Watt machine I love all to pieces. With mechanical mods, controlling wattage is hard to do-- the only way to change it is re-coil the topper-- and finding the sweet spot can be an exercise in frustration. I have them, and love them; I'm vaping a mech as I type. But they're not for everybody, and I suggest a bit more experience before you try. I did all that to talk about batteries. One of the best resources on batteries on the board is
@Mooch 's battery selection chart,
located here. The key thing is to get enough amperage available so you don't blow it up in your hand. With a regulated mod, this is much easier; with a mechanical it is critical, crucial and dangerous. On a regulated, in general, I recommend the Samsung 25Rs or the LG HE2s or HE4s if you're going to consistently vape under 70ish watts. If over that, or in a mechanical, use the Sony VTC4s. I use VTC4s exclusively, even though 25Rs would be a better choice for my regulateds at the power I use, just because I don't want a lot of different ones hanging around. For really high power applications, the LG HB6s, but their battery life sucks. You are correct mAh tells you how much power they hold, but the key is getting an amperage capability that can handle the draw you're going to put on it. Battery life is less important than safety

There are also a lot of re-wrapped and counterfeit batteries out there, so you have to be careful. Authentic ones can be purchased at Illumn, Orbtronic and RTDVapor.