Yesterday I played only half the number of tables for like half an hour to focus better on interesting decisions and trying to learn from them. I liked it a lot and definately recommend doing it from time to time.

Here are some hands where I wasn't sure about my decision, although maybe standard to others.

I had HUD problems on the tables the first 3 hands are from, so I don't have any stats on them, nor any reads.
The 4th hands it's included.

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HAND #1
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Honoustly I wasn't sure about any postflop street play here.

Poker Stars, $0.25/$0.50 NL Hold'em Cash Game, 6 Players
LeggoPoker.com - Hand History Converter

CO: $49.25
BTN: $59.85
SB: $63
Hero (BB): $50
UTG: $32.70
MP: $63.70

Pre-Flop: J Q dealt to Hero (BB)
UTG calls $0.50, MP raises to $2.50, CO folds, BTN calls $2.50, SB calls $2.25, Hero calls $2, UTG folds

Flop: ($10.50) 6 2 2 (4 Players)
SB checks, Hero checks, MP checks, BTN bets $6.50, SB folds, Hero calls $6.50, MP folds

Turn: ($23.50) 8 (2 Players)
Hero checks, BTN checks

River: ($23.50) 4 (2 Players)
Hero checks

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HAND #2
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I'm not sure wether to 2nd barrel or not. It's not a great board/turn card but I have some equity as well.
Also as played can I bet river? If so, how much?

Poker Stars, $0.25/$0.50 NL Hold'em Cash Game, 6 Players
LeggoPoker.com - Hand History Converter

CO: $24.25
Hero (BTN): $50
SB: $107.65
BB: $191.55
UTG: $51.85
MP: $50

Pre-Flop: T 8 dealt to Hero (BTN)
3 folds, Hero raises to $2, SB folds, BB calls $1.50

Flop: ($4.25) 7 6 2 (2 Players)
BB checks, Hero bets $3, BB calls $3

Turn: ($10.25) 3 (2 Players)
BB checks, Hero checks

River: ($10.25) A (2 Players)
BB checks, Hero ...

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HAND #3
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Flop I'm trying to c/r.
With villain checking behind I should lead turn like always shouldn't I?

Poker Stars, $0.25/$0.50 NL Hold'em Cash Game, 5 Players
LeggoPoker.com - Hand History Converter

BTN: $49.25
SB: $50.25
Hero (BB): $54.75
UTG: $126.15
CO: $50

Pre-Flop: 9 9 dealt to Hero (BB)
2 folds, BTN raises to $1.50, SB folds, Hero calls $1

Flop: ($3.25) Q 7 9 (2 Players)
Hero checks, BTN checks

Turn: ($3.25) 2 (2 Players)
Hero checks, BTN bets $1, Hero raises to $4, BTN calls $3

River: ($11.25) Q (2 Players)
Hero bets $9

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HAND #4
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I had villain on 18/15/ind over 79 hands from the past. No reads though so probably not been in interesting pots with him.

I was wondering if raising this flop is an option at all.
As played what's my turn play?

Poker Stars, $0.25/$0.50 NL Hold'em Cash Game, 6 Players
LeggoPoker.com - Hand History Converter

MP: $41
CO: $51.25
Hero (BTN): $53.80
SB: $35.20
BB: $76.90
UTG: $108.55

Pre-Flop: J J dealt to Hero (BTN)
UTG raises to $2, 2 folds, Hero calls $2, 2 folds

Flop: ($4.75) Q T Q (2 Players)
UTG bets $3, Hero calls $3

Turn: ($10.75) A (2 Players)
UTG bets $7.50, Hero ...