AK misses again

Villians are pretty loose/semi-aggressive. Nothing fancy. On the flop, should I: bet/call, bet/fold, or check/call as I did. If I get called by 1 player after betting, do you fire again, or check/fold. It's these types of situations that I find very difficult especially OOP.

Ultimate Bet 2/4 Hold'em (5 handed) converter

Preflop: Hero is BB with K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/heart.gif[/img].
UTG calls, <font color="#666666">1 fold</font>, Button calls, SB completes, <font color="#CC3333">Hero raises</font>, UTG calls, Button calls, SB calls.

Flop: (8 SB) 2[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, Hero checks, UTG checks, <font color="#CC3333">Button bets</font>, SB folds, Hero calls, UTG folds.

Turn: (5 BB) 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets</font>, Hero folds.

Final Pot: 6 BB