Radio Amateurs of Canada is the national association and has excellent links for those interested in Amateur Radio. You can get more information here:
RAC Bulletins, the following site hosts all of the archived and the current RAC Bulletin. Select the year and month to open the bulletin.
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