Spades is traditionally a game for four players, played in partnership (with the partners sitting opposite each other). The players take turns playing out one card from their hands clockwise around the table. You must play a card in whichever suit is played first (or led) if you can, which is called following suit.
Card Games For Dummies, 2nd Edition. When playing Spades, the play of the cards goes clockwise, starting with the player to the dealer’s left. He puts a card face-up in the middle of the table, and then all other players contribute a card in turn.
Each card represents its face value, with the ace being the highest card. The first dealer is chosen by draws for a high card or the first spade. The order of dealing in subsequent plays proceed clockwise. All the cards, face down, are dealt out by the dealer such that everyone has an equal number of cards.
Spades is played quite widely in the USA, but does not seem to have spread to any other countries. It is a plain-trick game in which spades are always trumps.
Learn the rules, front to back, and be the ace at the game of spades.