Hey guys, first post! A little back story:
I have never played an MMO in my life. In every RPG I always want to be the guy with the best looking armor, swd/shld, so the natural choice for me was Gla/Pld role! Boy, did I not see it coming... My first main story dungeon, Sastacha. I get a message: "you gonna go?" The first mob I get to, I go in Sword swinging and get torn apart by 2 people. "You don't know you're doing", "get out of here" then 5 minutes into the dungeon, kicked!
I turned off the game and started studying! The 1st time in a dungeon I have no idea where to go and what to pull. After I finish it the 1st time, I can kill it the next time, but the 1st time I usually get a "I feel for any party that has to suffer through this tank, lulz!" I think that last time it happened was The Stone Vigil, though after that initial first time, I blazed through it after that like a boss! I almost cancelled my account after that remark.

TL;DR: Keep doing what you're doing!