NL100 unraised pot; OOP; totally misplayed 2pair?!

[ComputerMaster]

No-Limit Hold'em, $1 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

SB ($161.20)
Hero ($100.95)
UTG ($98.10)
MP ($141.31)
CO ($124.05)
Button ($98.50)

Preflop: Hero is BB with 7[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/spade.gif[/img].
UTG calls $1, MP calls $1, <font color="#666666">3 folds</font>, Hero checks.

Flop: ($4) 7[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $3</font>, UTG calls $3, <font color="#CC3333">MP raises to $6</font>, Hero calls $3, UTG calls $3.

Turn: ($22) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">UTG bets $6</font>, MP calls $6, Hero calls $6.

River: ($40) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">UTG bets $8</font>, MP folds, Hero folds.

Final Pot: $48

I was lost in this situation and played it too weak. what to do for playing it right in the future?

[Barrin6]

I 3 bet/fold the flop again since it's so drawy. And try and continue from there.