First hand -
If you are opening the pot, especially if it is still early in the tourn and the blinds are small, go ahead and raise it up for value. Limping isn't too much of a mistake but a small raise is probably better.
Playing it passively after that is fine if you are doing it for the right reasons. Calling him down is bad if you are doing it because you are just a passive fish in the hand, hoping that you are good but unsure of how to find out. Alternatively, calling him down is great if you are strongly sure that you are ahead and you know that letting him bluff it off is the only way to get any additional value out of the hand.
Given his actual hand, if you raise him either on the flop or on the turn he is just going to fold it. So, it's really up to you, a style thing, whether or not you raise it there or give him extra chances to draw out in return for extra value. Again, given his actual hand, he wasn't betting his strength but was rather betting that you only had Ace high and would eventually fold. When he paired on the river that just made it easier to fire that third bet in. At that point, your last call is not a mistake. He could have had anything there, you win that often enough.
Second hand -
Again, first in the pot it is probably better to raise than to limp. You take the initiative and with position for all later streets you just give yourself many more opportunities to win it, even if you happen to have second best.
Having limped and facing a raise, it's fine to just call it and see a flop. The limp reraise is just too odd...
Having limp reraised, you should probably just fold to the shove. You are implying that you have a huge hand and you actually don't. That's the time to go away. That you happened to have been correct isn't much consolation. You weren't crushingly correct, you were a coin-flip correct. If you'd had QQ-AA that limp reraise would have made a lot more sense and when you'd induced the shove resteal you could have snap called with a dominating hand rather than a coin flip.