Hand 1: How do you approach this against a 40% stack here and what if he was on the button?

Party Poker No-Limit Hold'em, $ Hero (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($50)
UTG ($52.30)
MP ($97.50)
CO ($150.64)
Button ($0.90)
SB ($20.19)

Preflop: Hero is BB with 3, 3. SB posts a blind of $0.25.
4 folds, SB (poster) raises to $1.75, Hero...

Hand 2: This guy is a 60/0/.6 player and it seems like this is an easy laydown but should I fold TT-AA here? Obv in this hand I'm checking behind the river if he just calls the turn. This is an easy laydown, right?

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

UTG ($52.50)
Hero ($66.15)
SB ($52.55)
BB ($38.73)

Preflop: Hero is Button with 6, 8. SB posts a blind of $0.25.
1 fold, Hero raises to $2, 1 fold, BB calls $1.50.

Flop: ($4.25) 8, 4, 7 (2 players)
BB checks, Hero bets $3.5, BB calls $3.50.

Turn: ($11.25) 3 (2 players)
BB checks, Hero bets $6, BB calls $33.23 (All-In), Hero folds.

Final Pot: $50.48

Hand 3: Basic call or fold situation. I imagine I'm ahead more often than not.

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

UTG ($14.62)
MP ($91.50)
Hero ($50)
SB ($75.65)
BB ($15.25)

Preflop: Hero is Button with J, Q. SB posts a blind of $0.25.
1 fold, MP calls $0.50, Hero raises to $2, 1 fold, BB calls $1.50, MP calls $1.50.

Flop: ($6.25) Q, 2, 8 (3 players)
BB calls $13.25 (All-In), MP folds, Hero...

Hand 4: I raise this after a limper >80% of the time but this was an exception. The raiser in this hand is a borderline maniac at 90/40. Is this an easy laydown or should I take one off?

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

BB ($175.57)
UTG ($48.70)
Hero ($50.65)
Button ($50.75)
SB ($14.58)

Preflop: Hero is MP with 9, T. SB posts a blind of $0.25.
UTG calls $0.50, Hero calls $0.50, 2 folds, BB raises to $0.5, UTG calls $0.50, Hero calls $0.50.

Flop: ($3.25) 6, 9, 5 (3 players)
BB bets $1, UTG folds, Hero raises to $3, BB raises to $8, Hero...