You have to come as close to 21 without going over, while still having a higher total than the dealer. To receive your cards, first place your bet. The cards are dealt in rotation from the dealer, moving left-to-right. The dealer's hand features one card face up and one face down. You can then choose to receive more cards for your hand or showdown and see who has come closest to 21 without going over.
Rules
Single-deck blackjack is played using one deck.
Dealer will hit on a soft 17.
You may split up to three hands.
You may not surrender any cards.
Split Aces receive only one card.
No re-splitting of Aces.
A split Ace and a ten-value card is not a Blackjack.
You win when you hold a score of 21 or less but greater than the dealer's final total or you achieve a score of 21 or less when the dealer's final score exceeds 21.