The basic principle of Blackjack is that you want to have a hand value that is closer to 21 than that of the dealer, without going bust (over 21). Other players at the table are of no concern. Your hand is strictly played out against the hand of the dealer. The rules of Blackjack for the dealer are strictly dictated, leaving no decisions up to the dealer. Therefore, there is not a problem with the dealer or any of the other players at the table seeing the cards in your hand. Indeed, if you're playing at a shoe game, the player cards are all dealt face up. In any event, when you're just learning to play Blackjack, don't hesitate to show the dealer or other players your cards and ask questions.