DO
- Lead your partner's suit
- Lead your longest unbid suit against NT
- Lead your singleton against trump contract
- Lead the suit with a sequence
- Lead of the suit without an honor is passive, lead of the suit with an honor is active
DONT
- Don't lead the declarer's long suit
- Don't lead the suit with an ace against trump contract and if, lead the Ace
- Don't lead singleton trump or singleton K