PokerStars No-Limit Hold'em, $0.10 BB (3 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

saw flop|saw showdown

SB ($13.70)
Hero ($10)
Button ($3.70)

Preflop: Hero is BB with 7, A.
Button raises to $0.2, SB raises to $0.5, Hero calls $0.40, Button calls $0.30.

Flop: ($1.50) 4, 7, 2 (3 players)
SB bets $0.5, Hero raises to $1, Button folds, SB calls $0.50.

Turn: ($3.50) 9 (2 players)
SB checks, Hero bets $2, SB folds.

Final Pot: $5.50

I play 1/2 6-max LHE, I have no idea how to play NL really. This was my first hand at $10 NL on stars.
What's standard? Fold preflop? Raise more on the flop?