Hand 1 - first hand on table, no reads

Full Tilt No-Limit Hold'em, $0.02 BB (8 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

UTG+1 ($0.37)
MP1 ($2)
MP2 ($1.29)
CO ($2.04)
Button ($2.05)
SB ($2.01)
Hero (BB) ($2)
UTG ($1.26)

Preflop: Hero is BB with 8, Q
UTG calls $0.02, 5 folds, SB calls $0.01, Hero checks

Flop: ($0.06) 3, Q, 6 (3 players)
SB checks, Hero bets $0.05, UTG calls $0.05, SB raises to $0.20,

I know it probably an easy fold, but should I be betting this flop at all, I know nothing about the players, is it a check call. As played I can't see any competent player, doing that raise with anything I have beat apart from 45h which is a favourite I think???

Hand 2

Full Tilt No-Limit Hold'em, $0.02 BB (8 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

MP1 ($0.20)
MP2 ($2)
CO ($0.47)
Button ($2)
SB ($2.36)
Hero (BB) ($1.95)
UTG ($0.48)
UTG+1 ($1.30)

Preflop: Hero is BB with 6, 10
UTG calls $0.02, UTG+1 calls $0.02, 5 folds, Hero checks

Flop: ($0.07) 9, 10, 2 (3 players)
Hero checks, UTG bets $0.02, 1 fold, Hero calls $0.02

Turn: ($0.11) K (2 players)
Hero checks, UTG checks

River: ($0.11) 4 (2 players)
Hero bets $0.06, 1 fold

Total pot: $0.11 | Rake: $0

Results below:
Hero didn't show 6, 10 (nothing).
Outcome: Hero won $0.11

I have just put this up, as I played flop, and turn pretty passively, and I thought for a while about making this river bet, I thought a 9 might call thinking I only had a club, like A9, or even the A of clubs might call me down to "keep me honest". Should I of checked or is this "value bet" ok?

Hand 3 - argghhhh I wanted to raise this pre-flop but I didn't have the balls with the two limpers plus the sb,

Full Tilt No-Limit Hold'em, $0.02 BB (9 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

MP1 ($2)
MP2 ($2.57)
MP3 ($1.07)
CO ($3.20)
Button ($2.90)
SB ($3.20)
Hero (BB) ($1.99)
UTG ($0.30)
UTG+1 ($0.44)

Preflop: Hero is BB with K, Q
1 fold, UTG+1 calls $0.02, 2 folds, MP3 calls $0.02, 2 folds, SB calls $0.01, Hero checks

Flop: ($0.08) 4, K, 7 (4 players)
SB checks, Hero bets $0.06, UTG+1 raises to $0.12, 2 folds, Hero calls $0.06

Turn: ($0.32) 4 (2 players)
Hero checks, UTG+1 checks

River: ($0.32) 5 (2 players)
Hero checks, UTG+1 bets $0.10, Hero calls $0.10

Total pot: $0.52 | Rake: $0.03

Hadn't seen villian min raise before, so I didn't know what it meant but I deep down I knew I was beat. I am a pay off wizard but seriously is flop a fold or is that a call and river a fold?