hand 1: shove over the flop. villains raise size is odd but whatever.

hand 2: shove. this kind of looks like a set over set, but 2pair hands make up a decent part of his range here.

hand 3: raise to $1.25 after the limper. If you are doing this with every other hand (which you should be) then do the same thing w/ AA. Other than that i think its fine. you could 4-bet to $7 since he minraised.

hand 4: these spots are teh ghey but you played it fine.