This is eBay CANADA and if you list on this site, your listings will be seen by Canadian shoppers.
If you also give shipping fees for other countries, your will be seen there too. And your prices will show in both Canadian dollars and in the local currency.
I would suggest that before you list anything for sale here, that you do some buying.
First, because your feedback is a measure of trust. Low feedback sellers have a hard time finding good customers.
And because it will give you an overview of how the site works for your future customers.
Usually the suggested purchases include a digital metric scale, a measuring tape, and poly or bubble envelopes for shipping, because the hardest part of selling on eBay is figuring out shipping.
(There is a rate change coming on Canada Post on January 16 for example).
Come back and ask if you run into specific problems. There are lots of nosy helpful posters here.