hey guys i would like to discuss some basic micro limits issues and strategies

1) Of course, in poker there is no rule, but AA and KK do you always (or almost always) play a raise? what situation do you call? never fucking limp AA utg?

2) how do you play pocket pairs? in the situation of a 3 bet pot, 150 BBS + deep (you and the villain, always (or almost always) call 3bet regardless of position?

3) do they come out and enter again when they reach a certain amount of stack? for example 400BB +?

4) situation in which the villain has a low stack (~ 50bbs) and you receive a 3bet with a marginal hand, very little ev or break even, is it better to fold this marginal spot or do we continue anyway?