First hand I think I played OK, but didn't finished my way (it wasn't science to play them):
1)
Preflop: Hero is MP1 with A♥, A♠
3 folds, Hero raises, 5 folds, BB calls.
Flop: (4,40 SB) J♣, 9♦, 5♦ (2 players)
BB bets, Hero raises, BB calls.
Turn: (4,20 BB) 7♥ (2 players)
BB bets, Hero raises, BB 3-bets, Hero calls.
River: (10,20 BB) T♦ (2 players)
BB bets, Hero calls.
Final Pot: 12,20 BB
2)
Preflop: Hero is SB with 8♥, J♥
MP2 calls, MP3 folds, CO calls, BU folds, Hero calls, BB checks.
Flop: (4,00 SB) 9♦, T♦, Q♠ (4 players)
Hero checks, BB bets, MP2 calls, CO calls, Hero raises, BB calls, MP2 calls, CO calls.
Turn: (6,00 BB) T♥ (4 players)
Hero bets, BB calls, MP2 raises, CO calls. EDIT: Hero 3-bets, BB calls, MP2 folds, CO calls. (Yes, there is a mistake and it isn't written in Texas Grab'em either.)
River: (10,00 BB) Q♣ (3 players)
Hero bets, BB folds, CO calls.
Final Pot: 12,00 BB
3)
Preflop: Hero is MP1 with 9♠, 9♣. Hero posts a blind of $0,25.
Hero raises, MP2 3-bets, 2 folds, BU calls, 2 folds, Hero calls.
Flop: (10,40 SB) 2♥, 6♦, 9♥ (3 players)
Hero checks, MP2 bets, BU raises, Hero 3-bets, MP2 caps, BU calls, Hero calls.
Turn: (11,20 BB) 5♠ (3 players)
Hero bets, MP2 calls, BU calls.
River: (14,20 BB) 7♣ (3 players)
Hero bets, MP2 calls, BU calls.
Final Pot: 17,20 BB
4)
Preflop: Hero is BU with 7♦, 8♦
UTG calls, 4 folds, MP3 calls, CO folds, Hero calls, SB folds, BB checks.
Flop: (4,40 SB) 2♦, 6♠, Q♦ (4 players)
BB checks, UTG bets, MP3 raises, Hero calls, BB calls, UTG calls.
Turn: (6,20 BB) 4♦ (4 players)
BB checks, UTG checks, MP3 bets, Hero raises, BB folds, UTG 3-bets, MP3 caps, Hero calls, UTG folds.
River: (17,20 BB) 9♦ (2 players)
MP3 bets, Hero calls.
Final Pot: 19,20 BB