2016 e-filing has been closed by the IRS. You may use TurboTax desktop software to prepare, print and file your 2016 forms. 

You may go to this TurboTax website to purchase and download TurboTax 2016- https://turbotax.intuit.com/personal-taxes/past-years-products/

However, you may complete the forms attached by volvogirl below to prepare and file your returns as well.

Here are some blank forms & instructions for 2016 you can do by hand for free.
1040 <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/f1040--2016.pdf">https://www.irs.gov/pub/irs-prior/f1040--2016.pdf...
Instructions <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040gi--2016.pdf">https://www.irs.gov/pub/irs-prior/i1040gi--2016...>

1040A <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/f1040a--2016.pdf">https://www.irs.gov/pub/irs-prior/f1040a--2016.p...
Instructions <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040a--2016.pdf">https://www.irs.gov/pub/irs-prior/i1040a--2016.p...>

1040EZ <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/f1040ez--2016.pdf">https://www.irs.gov/pub/irs-prior/f1040ez--2016...
Instructions <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040ez--2016.pdf">https://www.irs.gov/pub/irs-prior/i1040ez--2016...>

2016 Tax Tables <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040tt--2016.pdf">https://www.irs.gov/pub/irs-prior/i1040tt--2016...>
Publication 17 Tax Guide for 2016 <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/p17--2016.pdf">https://www.irs.gov/pub/irs-prior/p17--2016.pdf</a>