The Canadian Intellectual Property Office site provides Canadians with information on how to register copyright, industrial designs, brands and trademarks, and patents.
As an artist, craftsperson, designer, musician, or writer, copyright is an issue that you will have to deal with at some point, whether it's your copyright or another creator's. Here are some informative articles and blog posts on the issues of copyright and plagiarism to give background into the ins and outs of protecting your work and respecting the work of others.
Ohmyhandmade: article on copying and small business
The Village Voice: Urban Outfitters Half-Admits it was Selling a Plagiarized Skirt