need help with this kind of situation:TP/WK,how to play post flop?

[Noodles]

Party Poker 2/4 Hold'em (10 handed),my 1st hand on this table converter

Preflop: Noodles is MP3 with 4[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/spade.gif[/img]. Noodles posts a blind of $2.
UTG folds, UTG+1 calls, UTG+2 folds, MP1 folds, MP2 calls, Noodles (poster) checks, CO folds, Button calls, SB folds, BB checks.

Flop: (5.50 SB) 8[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/diamond.gif[/img] <font color="blue">(5 players)</font>
BB checks, UTG+1 checks, <font color="CC3333">MP2 bets</font>, <font color="CC3333">Noodles raises</font>, Button folds, BB folds, UTG+1 folds, MP2 calls.
I hate this situations when someone bets into to you and you have TP/weak kicker,what to do? I rather raise,hopefully knock those behind out,see what original raiser does and maybe take a free card on the turn if he checks to me.
But if he had a good hand then why not CR me?

Turn: (4.75 BB) 6[img]/images/graemlins/spade.gif[/img] <font color="blue">(2 players)</font>
<font color="CC3333">MP2 bets</font>, Noodles calls.Ok now i am wondering why he bets into me on the turn,does he think his hand is good enough? i doubt if he caught something on the turn though

River: (6.75 BB) J[img]/images/graemlins/diamond.gif[/img] <font color="blue">(2 players)</font>
<font color="CC3333">MP2 bets</font>, Noodles folds.

I think this was a bad fold now.
I really get messed up when a guy bets 1st on the flop then calls a raise and bets into the raiser again on the turn,if he had a good hand why not CR? maybe afraid i will check through?

I am really bad in this situations and would like some advise on what to do?

Final Pot: 7.75 BB
<font color="green">Main Pot: 6.75 BB, won by MP2.</font>
<font color="green">Pot 2: 1 BB, returned to MP2.</font>

Results in white below: <font color="white">
MP2 doesn't show.
Outcome: MP2 wins 7.75 BB. [/color