AJs in mp. Cold Callers and pair on board

[flub]

I know limit and am starting to play a bit of NL. After playing this hand it struck me I may have no idea what I'm doing. The main villian just sat down this round. On the turn I didn't didn't fully respect his min-reraise because he checked through flop. I nearly always cBet this flop but was planning to check-fold if there was decent bet behind me. Comments on all streets welcome.


Poker Stars, $1/$2 NL Hold'em Cash Game, 9 Players
LegoPoker Hand History Converter

BB: $147.30
UTG: $245.15
UTG+1: $87.05
UTG+2: $224.15
Hero (MP1): $283.80
MP2: $342.55
CO: $166.30
BTN: $253.40
SB: $114.25

Pre-Flop: A[img]/images/graemlins/diamond.gif[/img] J[img]/images/graemlins/diamond.gif[/img] dealt to Hero (MP1)
3 folds, <font color="red">Hero raises to $8</font>, MP2 calls $8, CO calls $8, 3 folds

Flop: ($27) 8[img]/images/graemlins/spade.gif[/img] 4[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/heart.gif[/img] (3 Players)
Hero checks, MP2 checks, CO checks

Turn: ($27) J[img]/images/graemlins/heart.gif[/img] (3 Players)
<font color="red">Hero bets $21</font>, MP2 folds, <font color="red">CO raises to $42</font>, Hero calls $21

River: ($111) 5[img]/images/graemlins/diamond.gif[/img] (2 Players)
Hero checks, <font color="red">CO bets $60</font>, Hero calls $60