Hand #1

Notes on villain:
CRAI w/ turned boat
cold called 3b w/ 65s flopped flush lead hard

PokerStars No-Limit Hold'em, $0.10 BB (6 handed) from (Format: FlopTurnRiver)

UTG ($8.10)
Hero ($14.15)
CO ($9.45)
Button ($9.70)
SB ($19.20)
BB ($15)

Preflop: Hero is MP with J, A.
1 fold, Hero raises to $0.4, CO calls $0.40, 2 folds, BB calls $0.30.

Flop: ($1.25) 4, A, 8 (3 players)
BB checks, Hero bets $1, CO folds, BB calls $1.

Turn: ($3.25) 6 (2 players)
BB checks, Hero bets $1.5, BB calls $1.50.

River: ($6.25) K (2 players)
BB bets $11.6, Hero ??

Hand #2
Villain is 37.6/19.4/1.25 over 93 hands
I called his turn bet because his flop call made no sense to me.

PokerStars No-Limit Hold'em, $0.10 BB (6 handed) from (Format: FlopTurnRiver)

CO ($14)
Button ($5.70)
Hero ($13.05)
BB ($10.45)
UTG ($12.70)
MP ($3.55)

Preflop: Hero is SB with A, K.
1 fold, MP calls $0.10, CO raises to $0.3, 1 fold, Hero calls $0.25, 1 fold, MP calls $0.20.

Flop: ($1) T, 6, J (3 players)
Hero checks, MP bets $0.1, CO calls $0.10, Hero calls $0.10.

Turn: ($1.30) 2 (3 players)
Hero checks, MP checks, CO bets $1.5, Hero calls $1.50, MP folds.

River: ($4.30) A (2 players)
Hero checks, CO bets $3.5, Hero ??

Bonus Hand
What to do in this situation? Villain is same as in hand #2.

PokerStars No-Limit Hold'em, $0.10 BB (5 handed) from (Format: FlopTurnRiver Cards)

Button ($22.55)
SB ($5.65)
Hero ($10.60)
UTG ($5.50)
MP ($13.80)

Preflop: Hero is BB with , .
UTG calls $0.10, 1 fold, Button calls $0.10, 1 fold, Hero raises to $0.6, UTG calls $0.50, Button calls $0.50.

Flop: ($1.85) , , (3 players)
Hero bets $1.25, UTG calls $1.25, Button raises to $12, Hero ??

Hand 1)

I'd make a bigger bet on the turn if you're going to bet.

As played, fold this river, it's a really big bet and you're behind to a number of hands and only really ahead of hands like AT, A9 etc and the notes you have made indicate he is a tricky customer. Not many lead out with a flopped flush.

Hand 2)

3 Bet preflop. You have a fine hand but you're oop with a player left to act behind you. You need to isolate with this hand.

Flop make a c-bet and shut down if called or raised. Your turn call makes no sense either, you have ace high, facing a pot sized bet and due to your weakish play leading up to this you have no idea whatsoever where you're at. Fold fold fold. I see so many people showing me ace high when I've fired 3 times with an overpair because they cannot let it go. However, as played, you just hit top pair and have to keep him honest, he could well have some KJ/KQ type hand and you just sucked out on him.

Hand 3)

I think this is a clear fold.