I want a line check for the first hand in which I have no reads since its villain's first hand at the table.

Bodog 6max NL BB is $.5

UTG ($50.00)
Hero is MP ($59.45)
BTN ($46.25)
SB ($48.50)
BB ($162.40)

Preflop: Dealt to Hero:
UTG raises to $3, Hero calls $3, 1 fold, SB calls $2.75, 1 fold

Flop ($9.50):
UTG bets $9.50, Hero calls $9.50, SB folds

Turn ($28.50):
UTG checks, Hero Checks

River ($28.50):
UTG bets $28.50, Hero calls $28.50

The second hand is against same villain who has continued his aggro play for a few more orbits. I want to know if his minraise means anything because it seemed out of character for someone who has just been hitting the pot button post flop.

Bodog 6max NL BB is $.5

UTG ($159.15)
MP ($39.14)
Hero is BTN ($102.20)
SB ($44.75)
BB ($62.50)

Preflop: Dealt to Hero:
1 fold, MP calls $.50, Hero raises to $2.25, 3 folds, MP calls $1.75

Flop ($5.25):
MP checks, Hero bets $3.50, MP raises to $7, Hero 3bet/calls?

Last hand is against a different villain who is loose/passive. Not much history with him other than me isolating his limps. This is the first time he 3bet my iso. I cannot find the exact history but this is pretty much what happened:

UTG (??)
MP (??)
CO (~$35)
Hero is BTN (~$80)
SB (??)
BB (~$50)

Preflop: Dealt to Hero
2 folds, CO calls $.50, Hero raises to $2.25, 1 fold, BB calls $1.75, CO raises to $4.50, Hero calls $2.25, BB calls $2.25

Flop ($13.75):
BB checks, CO shoves for ~$30, Hero??