Pick up as much of the crafted items as you can. Run heroics for badges to buy the badge gear and make sure to do the daily every day for your Triumph emblems. Other than that I don't know what your current gear level is so just keep an eye out for pug raids. Or maybe your guild will run them with you. Also logging out in your tank gear when asking for help with it would make offering advice easier. But based on the fact that you do not even have the 25 emblem achievement I would suggest running A LOT of heroics and buy the tabards to help you earn rep while you are running heroics as well.