This video is a great introduction to the history Transition Towns and the approach they take to getting started.
Transition Towns entry at Wikipedia
The Transition Network (the primary information hub)
Transition Culture (the main blog)
The Transition Handbook and other books by founder Rob Hopkins
The Transition Primer
See also Transition Canada Facebook group
and Transition In Action (mainly U.S. but good place to search for contacts if region has no listed initiative) i.e. http://transitioninaction.com/main/search/search?q=New+Brunswick