Common situations I need help with...

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 3http://www.flopturnriver.com/phpBB2/...iles/heart.gif, 3http://www.flopturnriver.com/phpBB2/...miles/club.gif. 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 6http://www.flopturnriver.com/phpBB2/...iles/spade.gif, 8http://www.flopturnriver.com/phpBB2/...iles/spade.gif. SB posts a blind of $0.25.
1 fold, Hero raises to $2, 1 fold, BB calls $1.50.

Flop: ($4.25) 8http://www.flopturnriver.com/phpBB2/...iles/heart.gif, 4http://www.flopturnriver.com/phpBB2/...iles/spade.gif, 7http://www.flopturnriver.com/phpBB2/...es/diamond.gif (2 players)
BB checks, Hero bets $3.5, BB calls $3.50.

Turn: ($11.25) 3http://www.flopturnriver.com/phpBB2/...iles/heart.gif (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 Jhttp://www.flopturnriver.com/phpBB2/...iles/heart.gif, Qhttp://www.flopturnriver.com/phpBB2/...iles/heart.gif. 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) Qhttp://www.flopturnriver.com/phpBB2/...miles/club.gif, 2http://www.flopturnriver.com/phpBB2/...es/diamond.gif, 8http://www.flopturnriver.com/phpBB2/...miles/club.gif (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 9http://www.flopturnriver.com/phpBB2/...iles/heart.gif, Thttp://www.flopturnriver.com/phpBB2/...iles/heart.gif. 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) 6http://www.flopturnriver.com/phpBB2/...iles/spade.gif, 9http://www.flopturnriver.com/phpBB2/...miles/club.gif, 5http://www.flopturnriver.com/phpBB2/...iles/heart.gif (3 players)
BB bets $1, UTG folds, Hero raises to $3, BB raises to $8, Hero...

1- all 3 options are viable
2- yea, fold small overpairs too, but it really depends on how many hands he has had those stats.
3-i call, short stacks are stupid
4- looks like he has AA. i would call and try to improve and stack him.

1. I probably call for set value here, I think you're getting about the right implied odds here. Let me put it this way, at worst you are making a small mistake by calling.

2. I'm checking the turn here usually, as played it's a fold.

3. Board is somewhat draw heavy so I call this overbet and expect to be good a lot here.

4. Definitely a fold, you're 10 percent to improve on the turn, but another 9 probably scares him and if you make two pair on the turn it's easily counterfieted if he has an overpair.

1. You take all his chips if you hit. So call.