Study this over the weekend and then come back if you have specific questions....
http://www.cra-arc.gc.ca/tax/business/topics/gst/soleprop/menu-e.html

"What else could I do? I had no trade so I became a peddler" - Lazarus Greenberg 1915

"What else could I do? I had no trade so I became a peddler" - Lazarus Greenberg 1915
- answering Trolls is voluntary, my policy is not to participate.