10NL - Overpair, TP

Villain is 37/11/1 although I only have 70ish hands on him, all of which are from this session. I didnt put him on much of a hand as he only called my pf raise. I though he'd likely do this with any ppair, and of course I beat 2s, 3s, 6s, 7s, 8s and 9s. I have seen him call on a low flop w AK - and he didnt 3bet that pre flop - so i thought he might be trying with that. Anybody play this differently?

PokerStars No-Limit Hold'em, $0.10 BB (6 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

SB ($9.20)
BB ($12.75)
UTG ($8.85)
Hero ($9.45)
CO ($10.65)
Button ($11.65)

Preflop: Hero is MP with http://www.flopturnriver.com/phpBB2/.../smiles/td.gif, http://www.flopturnriver.com/phpBB2/.../smiles/th.gif.
UTG calls $0.10, Hero raises to $0.5, 2 folds, SB calls $0.45, BB calls $0.40, UTG folds.

Flop: ($1.60) http://www.flopturnriver.com/phpBB2/.../smiles/5s.gif, http://www.flopturnriver.com/phpBB2/.../smiles/4c.gif, http://www.flopturnriver.com/phpBB2/.../smiles/5h.gif (3 players)
SB checks, BB checks, Hero bets $1.5, SB raises to $3, BB folds, Hero raises to $8.95, SB calls $5.70 (All-In).

Turn: ($19) http://www.flopturnriver.com/phpBB2/.../smiles/ac.gif (2 players, 1 all-in)

River: ($19) http://www.flopturnriver.com/phpBB2/.../smiles/qs.gif (2 players, 1 all-in)

Final Pot: $19

Hand 2 - Hardly played any hands with villain although it is pretty clear he's loose/passive. Should I have bet the turn? And is betting the river a bad idea; should I simply check fold?

PokerStars No-Limit Hold'em, $0.10 BB (5 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

Button ($9.05)
SB ($4.60)
BB ($19.45)
Hero ($10.85)
MP ($10.60)

Preflop: Hero is UTG with http://www.flopturnriver.com/phpBB2/.../smiles/kc.gif, http://www.flopturnriver.com/phpBB2/.../smiles/qs.gif.
Hero raises to $0.4, MP calls $0.40, 3 folds.

Flop: ($0.95) http://www.flopturnriver.com/phpBB2/.../smiles/qc.gif, http://www.flopturnriver.com/phpBB2/.../smiles/9c.gif, http://www.flopturnriver.com/phpBB2/.../smiles/2c.gif (2 players)
Hero bets $0.9, MP calls $0.90.

Turn: ($2.75) http://www.flopturnriver.com/phpBB2/.../smiles/9d.gif (2 players)
Hero bets $1.6, MP calls $1.60.

River: ($5.95) http://www.flopturnriver.com/phpBB2/.../smiles/5s.gif (2 players)
Hero bets $3, MP calls $3.

Final Pot: $11.95

Hand 1 is fine.
Hand 2 I bet turn harder, like 2.
The river bet is fine as well, again I might make bigger, like 4. If you check you want to c/c against most opponents at these stakes, not c/f.
I like betting cause you'll get looked up by a worse Q often and checking leaves you in a difficult position if villain bets hard.

bet more on the turn and river in hand 2.