Senior interested in freelancing

Hello all,

I am about to graduate highschool in the year 2009 and my interest are based on web design. I started web design at a very early age, dating back to 2005 creating websites for family and family friends. I have a few questions.

What is the average pay for a freelancer monthly?
I have heard freelancers get paid this much per website:
$1200 USD
or
$20-$40 USD / hour

How do you write a quote?
Every web design service has a "Request a quote" section and I am curious what they write back. I studied business letters during my early years in high school however i am unsure if that applies to this certain topic. Please include length and template with descriptive sentences.

Is there any certain laws?
I live in Ontario, and i plan on using a company name rather then my full name, must i register this business?

What does the customer expect?
It's quite obvious customers have different expectations, as some have no clue and perspective on the project as others do. I am wondering what kind of coding should be applied? Just the basic website with the requested number of content pages they write in the quote (Strictly html/css)? or is a CMS expected for easy content editing.

Customers contact method
Do customers prefer to talk on the phone rather then emailing back and forth, if so what is the average duration of the phone call. What topics should we review, what he finds interesting? what coding he knows? etc, etc.