Howdy,
There isn't much to say about TAGs. Once you've mastered the strategy, you just have to ask yourself where your game is weak. The same applies to such an opponent.
You can be aggressive, but choose your spots carefully. You can also attack TAGs' blinds, but be careful there, as well.
In general, when playing against a TAG you can say:
He isn't your opponent.
Concentrate on the real fish.
If there aren't any fish at the table, try your luck in other waters.
You can get a lot of good practice by playing against TAGs, especially against the weaker TAGs you will find in the lower limits. This is a good way to find weak spots in your own game and plug up all the leaks before you reach the higher limits, where you will find a lot more TAGs at the tables. All in all however, they are not your ideal opponents when it comes to making money.
When it comes to what strategy to follow, you could study the advice we give in our Gold-Strategy Section ( http://www.pokerstrategy.com/strategy/fixed-limit/ ) and try to be the counterpart to this strategy. Our hand evaluation forums help you to confirm your read, as well as our live coachings can give you an understanding of the dynamics.