That just shows how it differs from person to person! hahaha, I smoked 1.5 packs of parliment lights a day. I vape 24mg.
My advice try doing some nice slow long drags, but not directly into the lungs till you are more used to it just focus on feeling in in the back of your throat! It takes some getting used to since its not the same as cigs =)
Happy Vaping my friend!