If you haven't tried it already, AutoX is a great way to learn your car at a relatively low cost. It can also be very humbling. So AutoX clubs are better than others, but you have to try a few to find the one (s) that are right for you. Either way, good or bad, it's all driving experience. People at these events are generally very friendly and more than willing to help out, drive you around the couse in their car and give pointers. It can be a lot if fun.
You could always book a weekend at Calabogie. They can instruct you in either their Mustangs or you can use your car. Personally, if it was me I would pay the extra to thrash on their cars. That way I know that I'm making the long drive home. The States would be another great option as well. Good luck! Let us know how you make out.