How do points work in tennis?

In tennis, points are earned by winning rallies. A player must win four points to win a game, with the scoring system being 15, 30, 40, and then game point. If the score reaches 40-40, it is called deuce, and a player must win two consecutive points to win the game. The first player to win six games wins a set, and the first player to win two sets out of three (or three out of five in major tournaments) wins the match.