@conzy75, first welcome to CCF. Second, as you have many questions, the website pointed out by @spruett would be a great start. This is regardless of whether your coin was made in Canada or the US. In terms of the desirability of certain errors, I'd recommend going back over the past week or two of threads in this section of CCF. You will see that the vast majority of "errors" being posted are just damage, while others with actual errors might still only be worth face value. Depending on the goals of that particular collector, it might still be fine to save the coin as a good example for their collection. Occasionally, coins with legit and valuable mint errors are posted. As you look at these prior CCF threads, you should start to get a feeling for which category your coins might fall into.
"The danger we all now face is distinguishing between what is authentic and what is performed."