Partners: You and Cuz across the table. Ron & Keisha are your opponents.
Bid: how many tricks you think you'll take. Team bid = yours + Cuz's. Make it: 10×bid points. Miss it: −10×bid. Extra tricks = 1 point each (bags) — every 10 bags costs you 100.
Nil (bid 0): take zero tricks = +100. Take even one = −100.
Spades are trump. Follow suit if you can. Can't lead spades until one's been played (or you're out of the led suit). First team to 500 runs the house.