My guild is about to start running 5-man Heroics and 10 man Naxx and have asked me to try my hand at being the MT. I know i have alot of work to do and have been grinding away on my Argent/Wyrmrest rep.

I am looking to get some advice from the more experienced tanks here on if I am even geared enough to begin trying to MT these places. Any advice is welcomed and greatly appreciated.

My Armory: The World of Warcraft Armory

I am new to tanking and instances in general and would hate to be the cause of my guild failing at runs and causing added repair bills. All pro tips are welcomed....but please dumb them down a bit so a simpleton like me can understand .