Get rid of all your cards first. Card strength: 3 < 4 < … < K < A < 2. Suits break ties: ♦ < ♣ < ♥ < ♠. Whoever holds 3♦ leads first and must include it.
Play singles, pairs, triples, or 5-card poker hands (straight < flush < full house < four-of-a-kind < straight flush). You must beat the current play with the same number of cards, or Pass. When everyone else passes, you lead again with anything.