PS 20+2: I play a couple of hands badly I think

[imported_leader]

The tournament is just getting started. I hadn't played any of the first 5 hands nor do I have any reads yet. The next two hands happened in succession. I think they're both pretty bad, but I don't know what I should be doing. I'm a noob to MMT so be gentle.

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) FTR converter on zerodivide.cx

BB (t2170)
UTG (t1280)
UTG+1 (t1700)
MP1 (t1720)
MP2 (t1460)
MP3 (t680)
CO (t1460)
Button (t1590)
Hero (t1480)

Preflop: Hero is SB with J[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/club.gif[/img].
<font color="#666666">7 folds</font>, <font color="#CC3333">Hero raises to t60</font>, <font color="#CC3333">BB raises to t100</font>, Hero calls t40.

Flop: (t200) 8[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">BB bets t200</font>, <font color="#CC3333">Hero raises to t600</font>, BB calls t400.

Turn: (t1400) 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">BB bets t800</font>, Hero folds.

Final Pot: t2200

His PF mini raise combined with him calling the flop raise (which I don't know is the right move either) scared me. I figured my only two choice on the turn were all-in or c/f.

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) FTR converter on zerodivide.cx

SB (t2870)
BB (t1280)
UTG (t1700)
UTG+1 (t1720)
MP1 (t1460)
MP2 (t680)
MP3 (t1460)
CO (t1590)
Hero (t780)

Preflop: Hero is Button with Q[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">4 folds</font>, MP3 calls t20, <font color="#666666">1 fold</font>, Hero calls t20, SB completes, BB checks.

Flop: (t80) 6[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, MP3 checks, Hero checks.

Turn: (t80) Q[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets t80</font>, BB calls t80, MP3 calls t80, <font color="#CC3333">Hero raises to t760</font>

Basically I thought I had the best hand and wanted to take the pot down right there. I figured I was pot committed if I raised ~300 and I didn't want people getting a discount to call.