If you choose to use TurboTax to complete and file a 2017 tax return you will need to purchase, download and install on a personal computer one of the 2017 desktop editions from this website - https://turbotax.intuit.com/personal-taxes/past-years-products/
A 2017 tax return can only be printed and mailed, it cannot be e-filed.
Use this IRS website for free federal forms, schedules and instructions for current and prior tax years - https://apps.irs.gov/app/picklist/list/priorFormPublication.html
