What are the main rules in beach volleyball?

In beach volleyball, each team consists of two players, and the objective is to score points by hitting the ball over the net into the opposing team's court. Teams are allowed up to three touches to return the ball, and they must not let the ball touch the ground on their side. Players cannot block or attack a serve, and matches are typically played in a best-of-three sets format, with the first team to reach 21 points winning a set, provided they lead by at least two points.