When the player sees their cards and one of the dealer's cards, they'll have to make a playing decision. This means that they can choose to hit, stand, double down, surrender or pair split. Hitting means that the player will receive another card to their hand.
When the player stands, it means that they are satisfied with the total of the hand and they would like to stand with the cards. Pair splitting happens when players have two Aces, and they would like to split them.
When players double down, they'll double their original bet and in return receive a drawcard, unlike the surrender where players lose half of the bet.