Questions to consider are:
What do I want to learn this instrument for?
What am I looking for in a teacher/coach?
What musical/acting level am I at?
Do I want to perform or is this more for my enjoyment/to try something new?
Do I want to be a professional in this instrument or is this more for learning as a hobby?
What types of songs/scenes/genres do I like and want to work on?
Am I willing to commit practice time outside of lessons to learning this craft?
Do I want to go to lessons at the studio, have the teacher come to me, or am I willing to try online lessons?
What days would I prefer to take lessons on a weekly basis?
Do I want to have a 30, 45, or 60 minute lesson?
Do I want to learn to read music?
Do I want to compose music or write my own monologues/scenes?
Knowing the answers to these questions before you come to your first lesson will help me create a lesson plan the will help you achieve your goals and desires!