hand 1: villain is 61/20/1.8 over 110 hands. what the hell is going on here?
PokerStars No-Limit Hold'em, $1.00 BB (8 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

MP1 ($97.50)
MP2 ($56)
CO ($207.55)
Button ($121.15)
SB ($36)
Hero ($99.20)
UTG ($140.25)
UTG+1 ($59.50)

Preflop: Hero is BB with Q, Q.
UTG raises to $2, 3 folds, CO calls $2, 2 folds, Hero raises to $12, UTG folds, CO raises to $25, Hero calls $13.

Flop: ($52.50) 9, 5, 7 (2 players)
Hero checks, CO bets $182.55 (All-In), Hero ?

hand 2: villain is 49/7/0.7 over 700 hands
PokerStars No-Limit Hold'em, $1.00 BB (7 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($98.50)
Button ($108.60)
SB ($84.50)
BB ($95.80)
UTG ($111.85)
MP1 ($127.20)
MP2 ($181.35)

Preflop: Hero is CO with 3, 3.
2 folds, MP2 calls $1, Hero calls $1, 1 fold, SB completes, BB checks.

Flop: ($4) 4, T, 3 (4 players)
SB checks, BB checks, MP2 bets $2, Hero raises to $8, SB folds, BB folds, MP2 calls $6.

Turn: ($20) 9 (2 players)
MP2 checks, Hero bets $15, MP2 calls $15.

River: ($50) 7 (2 players)
MP2 bets $81, Hero ?

hand 3: villain is 47/3/0.6 over 300 hands and limped in a lot. Should i get in on this flop with TOP two?
PokerStars No-Limit Hold'em, $1.00 BB (9 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($18.50)
Hero ($121.20)
UTG ($109.75)
UTG+1 ($219.80)
MP1 ($10)
MP2 ($124.20)
MP3 ($100)
CO ($99)
Button ($18.50)

Preflop: Hero is BB with J, 9.
1 fold, UTG+1 calls $1, 6 folds, Hero checks.

Flop: ($2.50) J, 8, 9 (2 players)
Hero checks, UTG+1 bets $4, Hero raises to $16, UTG+1 raises to $28, Hero calls $12.

Turn: ($58.50) K (2 players)
Hero checks, UTG+1 bets $25, Hero ?

hand 4: only 103 hands, villain was 22/7/1.2 unknown and looked like a semi-tight guy. Do you guys stack off or fold to his aggression?
PokerStars No-Limit Hold'em, $1.00 BB (7 handed) Poker-Stars Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($42.95)
BB ($138.80)
UTG ($140.40)
MP1 ($113.10)
Hero ($100)
CO ($127.35)
Button ($314.30)

Preflop: Hero is MP2 with K, K.
1 fold, MP1 raises to $4, Hero raises to $14, 4 folds, MP1 calls $10.

Flop: ($29.50) 4, Q, 8 (2 players)
MP1 checks, Hero bets $21, MP1 raises to $99.1, Hero ?