The opponent which you pass to varies (we'll handle that part for you), you start by passing to the opponent on your left. Typically it's best to pass your three worst cards to try and get rid of them.
You'll then select three cards when the game begins to pass to one of the opponents. To begin, each player will be dealt 13 cards.It gives you 13 penalty points! This is a game where you want a lower score rather than high. There is also a special card, which is the Queen of Spades.
Here are the rules for the card game Hearts: