PaPa,
You have probably read many posts from Americans saying you MUST join the AMA to fly. Since you are in Canada, this does not apply yo you. HOWEVER, in Canada we have the Model Aeronautics Associaton of Canada instead. Many clubs will let you take lessons without joining the club, but most will not allow you to fly without a MAAC membership, since it provides insurance coverage in case your plane goes out of control and hurts someone or something. A junior membership (under 18 yrs old is only $5 (GST included), and well worth it.
For more info, check out
http://www.maac.ca