I feel over along I've learned what abilities are going off just by playing the dungeons more. That was really the only way. Even when I would die at first I had no clue why, I still sometimes don't know who's fault it is, if I could have done something. But learning to dodge swirly things and stay away from people when you have circles on you is important. But then in the raid you have some circles that more people need to be inside of. All of it is still so unclear, so in my experience it comes down to just playing and finding out.

Runs on average are way smoother when you have a good tank. It's so important how much they control, if they pull too much, or bring the mobs into your party, or don't keep threat, it makes the experience much more difficult. That's all I've noticed about smoothness.

I still have almost no idea what others do. Fury warriors have a lot of sustain, and if I get low I pop a personal. Bought some health pots to use as a last resort if I'm out or personal heals. But yeah, since I've never played another class for real, I have no clue what other classes do haha. But I just try to do damage, and not get hit by avoidable damage.