I'll give this a try
You play loser in diffrent forms of the game. In a cash game for instance you might run with A5s from middle against a raise if you think another player is lose. In a MTT you make no assumtion like this in the early rounds. You would not even call with A5s from the middle and you would spit on it from the button.
Rule one in any form of the game, unless you know someone is trying to dominate you. Never call a re-raise without AA or KK. Chance is the guy who re-raised you pre flop has one of them.
AK is a raise hand but not a re-raise hand.
And if your playing from the button fold everything but AK AA KK. Yes chuck your AQs away. Muck the QQ - JJ or 10-10. You play the button in a MTT with anything else you will leak like a tap.
Without knowing your playing format this is hard but I can only advise you on MTT play. A form of the game have no trouble reaching the bubble in. I expect to reach the bubble in every game I play, but then I don't make it all the time do I
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In the latter part of the game when the blinds catch up. You are going to have to form your own TIGHT aggresive style. Add a few cards to your range. If you don't you will starve yourself out of a lot of MTT's.
Early however its pretty simple stuff to tell you. A hell of a lot harder for you to FORCE yourself to do.
Button: AA KK AK (Fold to a raise!) Just muck anything else. Sure you will hit that 3rd Q and be pissed every now and then. But long term Watch the A's and K's smoke your Button QQ and smile cos you still have your chips.
In the middle You can call with your pokets but no more than 2 and fold to any raises. Anyone raises the blind from those first two seats your in trouble.
You can call with A-10 and higher. Your Suited conectors are callers.
From late positions. You can add the small suited conectors as well. But again only if noone has raised the blind. When I say raised the blind I mean a real raise 3-4 times the blind. If they raise 40 into 80 they a fish and could have less than you.
Now this is the most important tip I can give anyone in MTT's Do not even call with those K-9's A-9's Q'9s or lower. Even if they are suited!
You will miss the occasional flush yes. But you will unltimatly save yourself being knocked out of MTT's. Think about how many times you have seen your A turn up. You get all happy and bet away....
Then the other guys has a real Ace it's kicker friend has a face on it.
Hope this helps you.