Anyone who
tells you that the way to play AA is all in, big raise, sneaky slow, or any other ABC formula does not understand the game. Run away fast and ignore their advice.
The proper way to play AA depends on many things, position, prior action, stack sizes, player types, your table image, cash or tournament, and more stuff that I'm not good or smart enough to think of right now. We've all seen players that can open with an all in with a full and fresh buy in stack and get 3 callers, because everyone else at the tale knows the player is FOS. We've also seen players that make a raise that is 25% of a buy in and that results in everyone folding because everyone knows the only raise Mr. Supertight ever made was with AA.
Someone suggested you ideally want to get heads up and all in. That is generally true. But you might be short stacked in a tournament and be happy to attempt a triple up or go home. In a cash game, you might want to attempt to get all in vs an inconsequential short stack and heads up in a huge side pot vs the table big stack.
You almost always want to raise or re-raise with AA, but not always. If you think your opponent would fold to a re-raise because of your tight image, and you are already sure you will be heads up against a big stack, a call of his pre-flop raise might be the best way to take his entire stack, because he will not put you on AA. A few times there has been a raise, and I call with AA and lots of action behind me because I've seen a player ready to push his entire stack in on a re-raise behind me.
The one thing you have to be at peace with is that AA does not mean you deserve to win the pot. Even if your all in were called by 72off, you'll still lose 12% of the time. As with all hands, there is a trade off of being willing to accept the risk of a loss vs the reward of a big profit. Sometimes you'll opt for the larger potential reward and get slapped down. It doesn't mean you played it wrong. As long as you had long term
expected value in your favor, you did the right thing, so move on to the next hand.