Players who don't bother to fully understand their class won't understand it no matter how they get to 50, at least, in any game you're able to solo to level cap.

Your first class via storyline requires you to play your role in dungeon formats, over and over again. Questing to max level isn't going to make you any more comfortable with your class either.

It comes down to basic reading of your tooltips for abilities and traits, and simple understanding of how they synergize.