Radio Amateurs of Canada is the national association and has excellent links for those interested in Amateur Radio. You can get more information here:
Our friends to the south also have a similar organization.
For those looking for instructional material, the Emergency Communications Ontario Association has a series of documents to help prospective hams study for their license. http://www.ecoa.ca/hamcourse.shtml
The following are links to other local amateur radio clubs and useful information.
Iroquois Amateur Radio Club: http://www.iroquoisarc.ca/
Ottawa Valley Mobile Radio Club: https://www.ovmrc.on.ca/
Brockville Amateur Radio Club: http://www.barc-on.com/
Rideau Lakes ARC: http://www.ve3rlr.ca
Montreal West Island Amateur Radio Club: http://www.wiarc.ca/
Kitchener/Waterloo ARC Swap Page: http://www.kwarc.org/swapshop/index.htm
Some interesting Links to tracking websites:
For APRS: www.aprs.fi
For Marine traffic: http://www.marinetraffic.com
For Air traffic: http://www.flightaware.com/live