how to become a referee (in illinois)

[wuzhannanan]

hi I am new to this forum, and I am interested in becoming a referee and could not think of anywhere to find information. hopefully someone can provide it for me here.

I live in Illinois, and basically, my 2 questions are:
1) what qualifications are required? (age,education,etc)
2) where do you start? I mean like, obviously you have to learn rules and everything, but what specifically do you have to do?

Thank you to anyone reading this, and any help you can provide!