I made a mistake and purchased the Deluxe Online version, which is forcing me to do taxes online. I do not feel secure online, so how can I download to my PC?

You would need to get a refund for TurboTax Online, and then buy the version of TurboTax CD/Download that you want.

If you bought TurboTax from a 3rd party retailer (ex: Costco, Staples, Walmart), please use this form to get a refund: https://turbotax.community.intuit.ca/community/after-you-file-questions/help/how-do-i-get-a-refund-for-a-turbotax-product/00/873559