so are you a brand-new vaper? have you not utilized your mod to it's full potential, as of yet?? have you not build a sub-ohm coil that worked well, as-of yet? are you asking this question because, despite having tried, your builds just aren't producing thick vapor?
if the above is your issue, then all you really have-to do, is learn ohms law. I suggest you just do a quick google search for ohm's law, choose a good website with a good overview of the law, and, read it - learn it - & read it again, until it sinks in!! It doesn't matter if you are terrible with mathematics/arithmetic/addition/subtraction, multiplication, fractions & decimals, algebra, or calculus. It doesn't take someone that knows any of those schools of math to learn Ohm's Law. in-fact, I am so poor at math, I just had to google the term "type of math that uses letters" in-order to remember & list algebra. lmfao.... I am TERRIBLE at math. The only reason I passed high-school math, was because my senior year teacher allowed me to copy... & he told me that if I showed-up for the final-test, he'd pass me with a D- for the year, even-though I should-of gotten an F. Actually, when that class was over, & the bell wrung, out-of 100 questions, I had finished 30, and when I got my math-final-test back, out-of those 30 questions I had finished, I got 12 right. lol. but he passed me!!
OHMS LAW is NEEDED to vape SAFELY! you MUST learn Ohm's Law to vape safely & efficiently. So, google Ohm's Law, and, when you are finished with learning Ohm's Law, I want you to google "Wattage Power Vaping" (just type that into google, & pick a good site) That's all there is to it. Once you've googled these two word strings, read a website or two on each subject, you will have NO problem figuring out what resistance coil you WANT to build, and what wattage you'll WANT to pull. KK?
If you'd like to take the easy way out, there are charts these days, that list resistance, with suggested wattage adjacent to it...
I recommend you SKIP this type of thing, & just learn wattage/power vaping & ohm's law on your own, okay? okay!
Good luck with this, and, WELCOME to ECF, WELCOME to the vape hobby, & please, PLEASE, ENJOY yer vape journey!!