The program will tell you when you are filing if you need to mail anything in. You can also print your return and check your cover page/instruction sheet. Here is how to print:
Log into your account and click on My TurboTax (or Taxes) at the top
If the drop down appears, choose My Tax Timeline (if it doesn’t appear when you click, it may have taken you directly to the page once you clicked My TurboTax).
You have clicked a link to a site outside of the TurboTax Community. By clicking "Continue", you will leave the Community and be taken to that site instead.