Playing hands like this confuse me. What was best here?

[JRF2k]

PokerStars 0.25/0.50 Hold'em (10 handed) converter

Preflop: Hero is Button with 8[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/spade.gif[/img].
UTG calls, <font color="#666666">2 folds</font>, MP1 calls, <font color="#666666">1 fold</font>, MP3 calls, CO calls, Hero calls, <font color="#666666">1 fold</font>, BB checks.

Flop: (6.40 SB) 8[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(6 players)</font>
BB checks, <font color="#CC3333">UTG bets</font>, MP1 calls, MP3 folds, CO folds, <font color="#CC3333">Hero raises</font>, BB folds, UTG calls, MP1 calls.

Turn: (6.20 BB) A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, MP1 checks, <font color="#CC3333">Hero bets</font>, UTG calls, MP1 folds.

River: (8.20 BB) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG raises</font>, Hero calls.

Final Pot: 12.20 BB