About Trolling in Low Level Dungeons(Despite being a 50 on another class)

[PetiteMalFleur]

-Pulling when the tank isn't even ready yet, or hasn't gone ahead to pull repeatedly.

If this is a consistent issue maybe you are just pulling too slow. It's very boring to stand around waiting for a slow tank.

-Telling them what to do in chat on a regular basis(unlike helping them fix what they're doing wrong in the case you wipe)

Maybe you should listen. I'm not sure what the difference is or why they should only speak up after a wipe.

-DPSing as a Healer in Early Low Level Dungeons to cause the Tank to die(ex. Sastasha, Halatali, etc.)

Healers should dps. It should not be an issue unless you are undergeared.

-Continuous Harassment in other forms

I understand you're learning your class. Marking mobs? It can slow the run to a crawl. The dungeon should take no more than 20-25 minutes. Good dps will simply attack the mob you shield lob making the markings unnecessary. If they aren't then adjust to mark a single target that you are attacking first. By the time it dies you should be well ahead on threat that the order of the last mobs doesn't matter.

OP, in my experience actual trolling is uncommon. If you are struggling consistently the problem may not be in your fellow party members.