Try to get 21 Points
You get 2 cards. To come closer to 21 Points you can get more cards. But be aware. You lose if you get more than 21 Points and you have to have more points than the dealer.
Pictures count 10 Points
Numbers count their own number
Aces can count 1 or ten
An Ace and a picture are a Blackjack (21)
If you get 2 cards with the same value you have the possibility to split them.