For me being a person whom this is their first stab at an MMO. I had no idea what a tank was or how to play it, but I figured it out, with help from people in game and a little research on the side. Like someone said in an early post, if you inform them you are new, most, not all but most people will be glad to help you out. I've only had one bad instance so far, though they didn't kick me and we never wiped the dungeon.

Tanking can be a bit overwhelming at first, but I got through that phase, and now I'm having a blast doing it. Once you figure it out and level up, you can still hack and slash. But you also need to be the leader and protect the party. Which means you need to pay attention to things. Just treat people how you would like to be treated, ask for help, take any and all advice.

If you kicked from a dungeon, oh well. Re-que it in the duty finder and do it again. Practice makes perfect as they say. If tanking isn't right for you, then just switch to a DPS class, and carry on.