You have two cards face up in front of your bet. To play your hand, first you add the card values together and get a hand total anywhere from 4 to 21. If you're dealt a ten-value card and an Ace as your first two cards that means you got a Blackjack! Congratulations!
Deal one up card to each player, followed by a down card to the dealer. Then deal a second up card to each player, followed by the dealer's up card. Make sure the cards are laid out diagonally so that both numbers on each card are visible. This makes it easy for both the player and the dealer to read the cards.