2 hands from todays session appreciate input

Full Tilt No-Limit Hold'em, $1 BB (6 handed) Full-Tilt Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

CO ($101.50)
Hero ($251.20)
SB ($103.20)
BB ($149)
UTG ($155.80)
MP ($124.95)

Preflop: Hero is Button with , .
UTG calls $1, MP raises to $4.5, 1 fold, Hero calls $4.50, 2 folds, UTG folds.

Flop: ($11.50) , , (2 players)
MP bets $8, Hero calls $8.

Turn: ($27.50) (2 players)
MP bets $18, Hero calls $18.

River: ($63.50) (2 players)
MP bets $43

Full Tilt No-Limit Hold'em, $1 BB (6 handed) Full-Tilt Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

UTG ($61.15)
MP ($100)
Hero ($165.80)
Button ($196)
SB ($99)
BB ($24)

Preflop: Hero is CO with , .
2 folds, Hero raises to $4, 1 fold, SB raises to $13.5, 1 fold, Hero calls $9.

Flop: ($27.50) , , (2 players)
SB bets $20, Hero calls $20.

Turn: ($67.50) (2 players)
SB bets $66 (All-In)

1st hand RAISE FLOP ! cuz u dont want what happened to happen, plus u want to build the pot ...

2nd hand why did u call preflop? why did you call on the flop? can't answer your question about the river unless u give us that information, but im guessing if u knew why you'd know what to do here.

what i mean is ... u need to make your decision preflop if u r calling because you think your hand is best and are looking to continue on a good flop or because you think your opponent has a big pair and if u hit a set u can stack him? if you don't know, almost always better to fold. unless SB is nitty this should be an easy fold preflop. if he is really spewy then that definitely means u can have the best hand here often by the river, plus u have added equty w/ straight draws and FD if he doesnt have one, meaning u should call. but i mean, it all depends on what u thought he had preflop.

1st hand, raise flop and as played call
2nd hand, fold preflop and on the flop and on the turn

1) Yeah we should really be raising the flop here if we ever want to get all our money in the middle.

2) I never call this pre cause its a big leak and honestly what do you beat on the flop, very little.

1st hand agree fully, should have raised as it turn out i was bet on the turn...
2nd hand, floated on flop suspected AK on villain, on the turn i knew he had either AA or KK, i figured i had the flush and the double gutshot as outs and made the call

50% of the time he will have a higher flush when u hit with that read....

hand 2 is pure spew