50NL People like to 3bet me a lot

[Miyogi]

So, one of my (many) leaks is that I don't really know how to play in 3bet pots when I don't have a monster. Any advice on any of these hands is appreciated (FWIW they all happened during my session about an hour ago).

Villian is unknown and this is like the second orbit at the table.

Full Tilt Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 5 Players - (LegoPoker HH Converter)

SB: $38.30
BB: $55.05
Miyogi (UTG): $54.15
CO: $88.50
BTN: $49.05

Preflop: Miyogi is dealt J J (5 Players)
<font color="red">Miyogi raises to $2.00</font>, CO folds, <font color="red">BTN raises to $6.75</font>, 2 folds, Miyogi calls $4.75

Flop: ($14.25) K[img]/images/graemlins/heart.gif[/img] 3 6 (2 Players)
Miyogi checks, <font color="red">BTN bets $10.00</font>, Miyogi folds
Uncalled bet of $10.00 returned to BTN

Pot Size: $14.25 ($0.70 Rake)

Villian who 4bet me is unknown villian who cold called the initial PFR is a big fish whom I would have loved to isolate against.

Full Tilt Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $49.50
BB: $239.90
UTG: $45.30
MP: $119.60
Miyogi (CO): $64.10
BTN: $51.00

Preflop: Miyogi is dealt J[img]/images/graemlins/heart.gif[/img] J (6 Players)
<font color="red">UTG raises to $2.00</font>, MP calls $2.00, <font color="red">Miyogi raises to $8.50</font>, 3 folds, <font color="red">UTG raises to $21.50</font>, 2 folds
Uncalled bet of $13.00 returned to UTG

Pot Size: $19.75

Villian in this hand is a 30/27/6

Full Tilt Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $50.25
BB: $24.85
UTG: $38.85
MP: $52.75
Miyogi (CO): $76.70
BTN: $77.75

Preflop: Miyogi is dealt T T[img]/images/graemlins/heart.gif[/img] (6 Players)
UTG calls $0.50, MP folds, <font color="red">Miyogi raises to $2.50</font>, BTN folds, <font color="red">SB raises to $8.50</font>, 3 folds
Uncalled bet of $6.00 returned to SB

Pot Size: $6.00

Villian in this hand is 20/15/1.9. Mostly do any of you just call and try to get it in here on the flop (I just watch a CR video where the guy said that was a great play with AA and was wondering if it applied).

Full Tilt Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 5 Players - (LegoPoker HH Converter)

SB: $48.30
BB: $49.25
UTG: $61.90
CO: $47.20
Miyogi (BTN): $50.65

Preflop: Miyogi is dealt K K[img]/images/graemlins/spade.gif[/img] (5 Players)
2 folds, <font color="red">Miyogi raises to $2.00</font>, SB folds, <font color="red">BB raises to $6.25</font>, <font color="red">Miyogi raises to $19.00</font>