QT on button
raise PF
once he raises call is automatic, on flop you pickup the pot with a positional bet. Fine
Notice that a check behind is not bad either with your gutshot hoping to hit and get some action.

QJo on BB
fine hand, well played, good c-bet 2/3pot with OESD + 2 overs

QJs on BB
I would've called, even that tight raiser. Then again i'm playing pretty loose lately, but it's an easy hand to play even oop and there was a limper i would hope would come along if i call.
Folding is ok too, to avoid playing oop.

68s in CO
I think raising there to 4x is better than limping. U'll mostly have position, there is a poster who checked so he probbly has crap. So, many times you'll just pick up the pot right there, and if u get a caller, u c-bet any flop and pick it up most of the time.

53o in BB
there is one open limper on BT
flop comes J52
I would take a stab at it, since that flop didn't hit many hands and villain didnt even raise PF. U actually hit middle pair. If you get raised, fold. If he calls, reevaluate on turn. Most of the times, though, you'll just get it right there.

QTs UTG
u minraised PF
i would raise more (i usually raise to 4x UTG regardless of my holding) or fold.
QTs is a marginal holding for UTG, but still playable.
U c-bet your FD got 2 calls
on turn i like the blocking bet
river push is ok at this level too

92s in SB vsBB
i would fold that, it's not even a "worth a steal" kind of hand
U c-bet, fine
let go once u get action, fine