Hello there everyone. I am kind of new to vaping so please don't judge me very hard. I am thinking of buying a 220W Smok Alien vape but i don't understand a few things. Firstly i would like to know how do you find out what battery you need for the vape you have. Secondly i would like to ask what are the ohms in a coil and how do i find out what coil i need because i saw a few different once and all of them are " best " between certain wattages but none of them were good for 220 watts which is what the vape I'm buying goes up to. Also is the only difference between tanks the amount of e-liquid they can hold or is there something else as well ? I used to have a vape that went up to 50W but i had no idea what i was doing i just kept vaping and I hear that you are supposed to change your coil or something every 1-2 weeks but i never changed anything in my vape and i used it for about 2 months every day.