The numbered cards (2-10) have a numerical value equal to the number printed on the card. All face cards (Jack, Queen and King) as well as Tens have the value of ten. Aces can have the value of 1 or 10. In blackjack card suits are of no importance. The value of the ace seems to confuse some players under the "heat of the action". Player chooses the value for Aces himself. You can count the ace as eleven until a count of eleven will put your hand over twenty-one, then you can count the ace as one.