When the team that is in is out, the other team goes is, and the team that was in tries to get them out. When a player from the team that is in goes out, another player from the team that is in goes in, and so forth, until all the players are out. The team that is in is the one that has bats, and there are two players in at a time.
Cricket is played on a pitch, with a crease.
You are not allowed to wet the crease. The idea of the game is to score runs. The bowlers bowl the balls from either one of two ends. There are six balls in each over. The balls are changed every now and then, and fresh balls are brought into play.