Now I have my Provari in my hand, but I don't know how to apply the voltage, SR,LR, resistance thing? and what exactly knowing all that will benefit me?!! please help.
Lower res, lower voltage, standard res higher voltage. If you push a LR too hard it will taste burnt. I don't take LR cartos over 4.2v. Standard 3 ohm I vape at 5.7v.
You can check the resistance of the carto/atty with the provari, it's "Ao" in the menu, right after check battery.
Spiral that is a very good chart you have on photobucket!