Re: Nature or instant lites coals ?
I would start with the quick lights as a beginner because of how simple they are. They're fast, portable, and burn hot.
Natural ones, of course, work better though. I wouldn't really invest in them before you're a little experienced though because not only do you need to buy a burner, but you kinda have to know how to make a good set up. Quick lights will burn as hot as they need to where as you kinda have to make a decision on natural ones to know if they're hot enough before you take them off the burner.
The natural ones are also healthier, hotter, and last longer.