I lived overseas last year and will file taxes in a foreign country but I still have little income from an online business in Canada. What's the best way to file this?

You can enter it as Self-Employment/business income. Use the “Find” tool to search for “self”. Select “Self-Employment” and then click the “Go” button. If you are using TurboTax Online, you will need to upgrade to the Self-Employed version to do this, if you did not already choose that version when you started your return.