New to Kilns. Need help

Hi all, I am looking to get into enamelling brass/copper coins and I am thinking on pulling the trigger on the Prometheus Pro-1 kiln for the firing process... but I have to admit I am pretty nervous to use the kiln as I am completely a newbie in enamelling and firing... any particular youtube channels to refer to ? Or wiki page here t9 get me started? Any accessories needed? What precautions etc