Do you mean you want to sell on eBay?
Sell what you know: know what you sell.
What are your hobbies? Your profession or training?
Do you have a basement (or storage locker) full of stuff?
Do some buying here to find out how it works.
Study shipping.
https://www.canadapost.ca/cpotools/apps/far/business/findARate?execution=e1s1
But don't ship overseas until you have Detailed Seller Ratings that show.
Or until the Paypal Hold is lifted.
Did you know that your customers' cleared payments will be Held against your performance for 21 days?
Did you know that you are required to ship once the payment clears, even though the Hold will still be in place?
Do you have any specific questions?
Oh-- you probably should self report your question, because putting an email in a public forum like this is not a good idea.
