There are etiquette things that actors, new actors, need to know about. Because it only takes one mess-up on a set to get fired. Not being where you're supposed to be or saying something to the wrong person that you're not supposed to say, and those are like basic things that the actors need to know.
Loretta DevineFor movies, I usually do an entire book that has all kinds of things about what is happening at the time the movie is going on and try to get into what my character's going to be like, to try to get some consistency, because they shoot movies out of order.
Loretta Devine