Couple of hands/Questions

[franx1]

SB 31/14/2.4 After couple of hundreds of hands, seems like ok (not good) player.
6-max 0.50-1.00
UTG (HERO): 7 [img]/images/graemlins/club.gif[/img]7 [img]/images/graemlins/spade.gif[/img]

HERO Raise, 3 Fold, SB Call, BB Fold

FLOP: J [img]/images/graemlins/spade.gif[/img]J [img]/images/graemlins/heart.gif[/img]A [img]/images/graemlins/heart.gif[/img]

SB Bets, HERO ?

Is this insta fold against any type of player, or should I fight against aggressive players?

UTG 25/10/2.65
SB 29/12/1.6
BB (HERO) K[img]/images/graemlins/heart.gif[/img]8[img]/images/graemlins/heart.gif[/img]

UTG calls, 3 fold, SB Raise, HERO Call, UTG call

Flop K[img]/images/graemlins/spade.gif[/img]7[img]/images/graemlins/club.gif[/img]T[img]/images/graemlins/spade.gif[/img]

SB bets, HERO raise, UTG fold, SB raise, HERO ?

Lets assume that HERO calls.

Turn Q [img]/images/graemlins/spade.gif[/img]

SB Bets, HERO ?

Also, question for these micro stakese 6-max games. Should I allways continuation bet regardless of opponent/board, if its heads up on the flop? How about 3 way on the flop?