You are dealt two cards face up and the dealer is dealt two cards, one face down and one face up. The goal is to get closer to 21 points than the dealer without going over 21 points. A Perfect Pairs side bet is a bet that your first two cards will be the same, but not necessarily the same suit. For example, 3♦ 3♣ or 8♣ 8♠.
A "Blackjack" is a hand that totals 21 points with two cards. Blackjack automatically wins.