What are the first things an actor learns in stage acting?

Question: What are the first things an actor learns in stage acting!?
Best Answer - Chosen by Asker:

Don't call the director a washed-up hag!.
Don't unexpectedly use tongue when you do a kissing scene with the lead female!.
Don't refer to the supporting cast as talentless nobodies!.
Don't stop the show to scream at the tech crew for their latest goof-up!.
Don't refuse to take your bows because the audience stunk!.

At least these are the first lessons that I personally learned!.Www@QuestionHome@Com

I would say!.!. projection!.
Couldn't possibly begin to matter less how "good" you are if "the little old lady in the back row" can't hear you!.!.!.

Sing out Louise!Www@QuestionHome@Com

How to use their bodies, voice and face!. Without these you have nothing!. Www@QuestionHome@Com