Some of the key items of proper curling etiquette are as follows:
Shake hands with your opponents before and after each game.
Opposing players will toss a coin at the start of the game to determine last stone advantage.
When your opponents are preparing for delivery, stand to the side of the sheet, single file and between the hog lines. Move only after the stone has been released.
If you are throwing next you may stand on the backboard, but remain quiet and out of sight of the opposition thrower.
Only skips and thirds may congregate behind the tee line. They do not move or hold their brooms on the ice while the opposition is preparing to deliver a stone.
Wear clean, appropriate footwear that will not damage the ice.
Be ready to go when it’s your turn to deliver a stone.
At the conclusion of an end, all players remain outside the rings until the opposing thirds have agreed on the score.
(The above are courtesy of StartCurling.ca )