Just to add, TAGG isn't betting when you have it and not betting when you don't. You need to learn what continuation betting is and start implementing that into your game. I don't suggest you begin two-barreling without it that often, as the chances of them calling the turn after they have called the flop at that level is probably high. But beginning to c-bet will start bringing in a good deal of profits.

http://www.pr0crast.com/2+2.NL.Anthology.v1.htm

Begin reading as much as you can there. It will help alot. Try to go in order unless there is a concept you totally don't understand.

Note, I'm not saying start lauching multi-street bluffs as most fo the players call bets with weak holdings and they dont' care what your hand is or the action to them. But c-betting on the flop can take it down a good portion of the time. And by c-betting when you have it and when you don't, as you move up it will make it harder for better players to know when you have it or when you don't.