How to Start Shooting a Scene

1st. Director shouts "Quiet on set!"

2nd. Director shouts "Roll sound"

3rd. Sound Operator shouts "Sound rolling!"

4th. Director shouts "Roll camera!"

5th. Camera Operator shouts "Camera Speed!"

6th. Director shouts "Marker!"

7th. Marker shouts "Take 'No..."!" 

8th. Director shouts "Action!"