A bunch of trouble hands.. please help

Hand #1: I believe villain was a 75/5/1.5 over 200 some hands..

Party Poker No-Limit Hold'em, $ BB (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

CO ($49.34)
Button ($49.50)
SB ($49)
BB ($56.53)
UTG ($6.01)
UTG+1 ($48.75)
UTG+2 ($105.17)
MP1 ($10.95)
MP2 ($41.55)
Hero ($58.05)

Preflop: Hero is MP3 with A, A. SB posts a blind of $0.25.
1 fold, UTG+1 calls $0.50, 2 folds, MP2 calls $0.50, Hero raises to $3, 3 folds, BB calls $2.50, UTG+1 folds, MP2 calls $2.50.

Flop: ($9.75) 9, T, 6 (3 players)
BB checks, MP2 bets $3, Hero raises to $12, BB folds, MP2 calls $9.

Turn: ($33.75) 7 (2 players)
MP2 bets $9, Hero calls $9.

River: ($51.75) 3 (2 players)
MP2 calls $17.55 (All-In), Hero folds.

Final Pot: $69.30

Hand #2: I played this hand badly... didn't I? Give it to me..

Party Poker No-Limit Hold'em, $ BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP3 ($48.97)
CO ($45.60)
Button ($29)
SB ($90.20)
BB ($20)
UTG ($49.77)
UTG+1 ($46.65)
MP1 ($47.95)
Hero ($48.25)

Preflop: Hero is MP2 with 9, 9. SB posts a blind of $0.25.
UTG calls $0.50, 2 folds, Hero raises to $2, 5 folds, UTG calls $1.50.

Flop: ($4.75) 8, Q, J (2 players)
UTG checks, Hero bets $3, UTG raises to $9, Hero calls $6.

Turn: ($22.75) 6 (2 players)
UTG bets $9, Hero calls $9.

River: ($40.75) T (2 players)
UTG bets $14.9, Hero calls $14.90.

Final Pot: $70.55

Hand #3: I think I played this hand fine.. do you agree? What would you change?

Party Poker No-Limit Hold'em, $ BB (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG ($8.25)
UTG+1 ($20)
UTG+2 ($10.75)
MP1 ($39.27)
MP2 ($9.45)
Hero ($49.50)
CO ($65.15)
Button ($39.01)
SB ($25.04)
BB ($56.40)

Preflop: Hero is MP3 with 7, 7. SB posts a blind of $0.25.
UTG calls $0.50, 2 folds, MP1 calls $0.50, 1 fold, Hero calls $0.50, 1 fold, Button raises to $2, 1 fold, BB calls $1.50, UTG calls $1.50, MP1 calls $1.50, Hero calls $1.50.

Flop: ($10.25) Q, 7, K (5 players)
BB checks, UTG checks, MP1 checks, Hero checks, Button checks.

Turn: ($10.25) 3 (5 players)
BB bets $3, UTG folds, MP1 calls $3, Hero raises to $15, Button folds, BB folds, MP1 calls $12.

River: ($43.25) J (2 players)
MP1 calls $22.27 (All-In), Hero calls $22.27.

Final Pot: $87.79

That is all I have for tonight! Feedback is greatly appreciated.

hand 1.. i might call that riv bet , im getting decent odds 3.5to1(guesstimation) .. would he really play a set like that with a weak bet on the turn with that board ....i think he might have 2 pair or a smaller overpair/busted flush ,

hand 2
meh , this is horrible , i push the riv as played ,

hand 3
in multiway pots like these when its checked to me in LP on the flop , i like throwing a small/medium sized bet to juice the pot ...the turn and riv play is standard ...

hand 2) fold flop without a read. turn/riv seem fine

hand 3) bet flop.

So this is a spot where betting into the PFR IS something I should do then? on hand #3

Hand one I call believing I am good more than 25% of the time. You are getting 4 to 1 on the call, so you need to be good only 20% of the time to break even. With those stats you could be looking at AT-JT, lower PP as much as 88/99/TT/78.

Hand 2 is a fold of the flop I think. As played I think you have to call river. You got one of the cards you were looking for, but I think you are beat.

Hand 3, I definitely bet into the PFR in a multiway pot that is already good sized. Maybe $5 or $6. You probably get a caller or two, plus you don't let anyone draw to the str8 for free. Turn raise is good, and I probably make a crying call on the river as well.

Hand 1: very annoying.. I might be tempted to just push the flop here if I had been playing aggressively at that time. And I call the river as played. The 3 didn't help him so why call the turn and fold the river?..

Hand 2: I fold the flop quickly. If you call I think you have to see it through like you did.

Hand 3: I bet the flop here because there are 4 other people in the pot. If you slowplay then the rest looks fine. Slowplaying the flop isn't that bad here imo because the pot is already juicy compared to stack sizes.

One more thing.. your check/raises can be bigger. Remember that if you raise to the size of the pot over a bet, they have to pay less than the pot to call.