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Question : Where is the best place to go on the internet to show me the Canadian errors and rarer prices....???
Since the usual catalogues are copyrighted most of this kind of information will not show up in one place on the net.
You really need a Unitrade Canada specialized catalogue (2012 shipping soon).
http://www.adminware.ca/admphil.htm for errata and updates.

However, even this catalogue does not list all the varieties of errors and so called errors (printing anomalies, oddities, freaks) that occur.
Darnell used to have an Canada EFO catalogue (2005) but I am not sure if it still exists or a new version has been printed.
Other than those,
ebay lists errors or EFOs or varieties. The pricing is sometimes dependent upon the demand for such an error as not all collectors collect them, or if they do perhaps only certain types (misperfs for example) or the most glaringly obvious ones like missing colours etc ($5.00 Missing Moose).
You need sharp eyes and hopefully a good scanner to really study these printing anomalies.
I (and others) have been saving pictures now and then off of
ebay (I do this) of Canada errors as either catalogue mentioned above do not at times have good pictures of certain errors (this is improving).
Scott (and Unitrade) only list the constant errors or varieties (those that occur on every pane or plate consistently over and over. They do not have the time or room to list all possible varieties of every stamp.