After you file

You cannot report your W-2's from 2016 on a 2017 tax return.  The 2016 income can only be reported on a 2016 tax return.

Go to this TurboTax website to purchase a download for one of the 2016 desktop editions - https://turbotax.intuit.com/personal-taxes/past-years-products/

A 2016 tax return can only be printed and mailed, it cannot be e-filed.