After you file

How to file a prior year
https://ttlc.intuit.com/questions/1900990-how-do-i-file-a-prior-year-tax-return

Or If you have a simple return You can fill out the blank forms for free.
Here are some blank forms & instructions for 2017
1040 https://www.irs.gov/pub/irs-prior/f1040--2017.pdf     
Instructions https://www.irs.gov/pub/irs-prior/i1040gi--2017.pdf

1040A https://www.irs.gov/pub/irs-prior/f1040a--2017.pdf    
Instructions https://www.irs.gov/pub/irs-prior/i1040a--2017.pdf

1040EZ https://www.irs.gov/pub/irs-prior/f1040ez--2017.pdf    
Instructions https://www.irs.gov/pub/irs-prior/i1040ez--2017.pdf

2017 Tax Tables https://www.irs.gov/pub/irs-prior/i1040tt--2017.pdf
Publication 17 Tax Guide for 2017 https://www.irs.gov/pub/irs-prior/p17--2017.pdf