Preferred First Name

What is a preferred first name?
Can I change my preferred name back to my legal name?
Can I request any preferred first name that I want?
Do I have to use a preferred first name?
How do I add a preferred First name?
What happens to my old email if I change my preferred name?
What is a legal name?
What if I changed my legal name?
When will instructors be notified of my preferred name?
Where will the legal name be used?
Where will the preferred first name be used?
Who do I contact with questions about my preferred name?
Who do I contact if I am unable to login after changing my preferred name?