Ive been vaping for a year now and i never tried RDAs or coil building and i feel like its time to do that but i dont know where to start. Im going to use prebuilt coils, i saw that there are several types of them but i dont know whats the difference. Each type has a different resistance, so how can i know what would be the best wattage to use on a specific coil? Also i dont know which prebuilt coils are better than others and which cotton is best. By the way is it safe to build (or wick im not sure) the coil on the vape kit? I saw in some videos they were firing the wires before putting the cotton, is it safe to do that on any kit? I have a Revenger X. Can anyone help with all the details? Thanks.