1: bet more on flop, call his turn bet (man dont fold this overpair with those awesome pot odds).

2: Fold prf. You have a trashy hand, and even worse - you are OOP with a drawing hand, yuck.
If co is aggro enough to cbet when checked to, I like a c/r , because of your relative position.
The action is weird, he calls on the flop and raises the turn, kind screams monster, maybe either AA or AJ turning twopair. But I call turn because of his aggro tilty image.
River is meh. I call here if I have confidence in my read on him (that is a tilty aggro).

3: yeah 3-bet flop here with that drawy board. I dont get the turn minraise. I might just fold the turn here because of the flop and turn action from both opponents (SB could very well be trappy you on the turn with a c/r).