You should make the same type of raise with every hand, raising small with certain hands and big with others will give people tells
The way I play AA, is if there's no raise, I raise between 3-5BB, depending on stakes im playing and wether its cash or tourney.
If there's a raise before me, I 3bet. Say blinds are $1/$2, and someone before me raises to $6, I will 3bet here to $15-$18.
If I'm heads up with the raiser, and I have his stack covered, i'm happy to 3bet shove instead, especially if the raiser is short stacked. (AA is %80 to win preflop, but it feels like they lose a hell of a lot more then just %20 of the time, so Im happy to steal blinds/raises to a 3bet/shove with this hand.)
HOWEVER, Some people will just call a raise, some people will just limp.
Table image, wether you're opponents are loose or tight players, wether they're aggressive or passive, etc etc will influence your decision. Every pro has an adaptive play style, they play in accordance to the table , meaning they will play AA one way, on one table, and a different way on a different table. (I'm not a pro, don't get that idea).
With practice, you'll find your comfort zone, but for now, don't raise so small that speculative /trash hands are getting a good price to play, and don't raise so big that everyone knows what you're holding. Raise the same with every hand you want to raise with.