1) Villian is 30/12. No other specific reads.

PokerStars No-Limit Hold'em, $4 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

BB ($589.70)
UTG ($398)
MP ($93.70)
Hero ($370.30)
Button ($528.10)
SB ($231)

Preflop: Hero is CO with T, A.
1 fold, MP calls $4, Hero raises to $16, 1 fold, SB calls $14, BB calls $12, MP calls $12.

Flop: ($64) 8, 7, 6 (4 players)
SB checks, BB bets $32, MP folds, Hero raises to $104, SB folds, BB raises to $573.7, Hero calls $250.30 (All-In).


2) Villian is unknown. Should I take the free card?

PokerStars No-Limit Hold'em, $4 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP ($632.15)
Hero ($632.80)
SB ($391.40)
BB ($402.40)
UTG ($293)

Preflop: Hero is Button with 9, 8.
UTG raises to $12, 1 fold, Hero raises to $48, SB calls $46, 1 fold, UTG folds.

Flop: ($112) Q, J, 4 (2 players)
SB checks, Hero?

3) Villian is unknown. What's your standard line on this river?

PokerStars No-Limit Hold'em, $4 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG ($589.70)
MP ($398)
CO ($101.70)
Hero ($498.30)
SB ($387.10)
BB ($239)

Preflop: Hero is Button with T, K.
2 folds, CO raises to $8, Hero calls $8, SB calls $6, BB calls $4.

Flop: ($32) 3, 4, K (4 players)
SB bets $8, BB folds, CO folds, Hero calls $8.

Turn: ($48) T (2 players)
SB bets $40, Hero calls $40.

River: ($128) 6 (2 players)
SB checks, Hero?