After you file

I have the list of some of the forms you might need if you want to do it for free by hand.

2015
Here are some blank forms & instructions for 2015
1040 <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/f1040--2015.pdf">https://www.irs.gov/pub/irs-prior/f1040--2015.pdf... <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040gi--2015.pdf">https://www.irs.gov/pub/irs-prior/i1040gi--2015...>

1040A <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/f1040a--2015.pdf">https://www.irs.gov/pub/irs-prior/f1040a--2015.p... <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040a--2015.pdf">https://www.irs.gov/pub/irs-prior/i1040a--2015.p...>

1040EZ <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/f1040ez--2015.pdf">https://www.irs.gov/pub/irs-prior/f1040ez--2015... <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040ez--2015.pdf">https://www.irs.gov/pub/irs-prior/i1040ez--2015...>

2015 Tax Tables <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040tt--2015.pdf">https://www.irs.gov/pub/irs-prior/i1040tt--2015...>
Publication 17 Tax Guide for 2015 <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/p17--2015.pdf">https://www.irs.gov/pub/irs-prior/p17--2015.pdf</a>

2014
Here are some blank forms & instructions for 2014
1040 <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/f1040--2014.pdf">https://www.irs.gov/pub/irs-prior/f1040--2014.pdf... <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040gi--2014.pdf">https://www.irs.gov/pub/irs-prior/i1040gi--2014...>

1040A <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/f1040a--2014.pdf">https://www.irs.gov/pub/irs-prior/f1040a--2014.p... <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040a--2014.pdf">https://www.irs.gov/pub/irs-prior/i1040a--2014.p...>

1040EZ <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/f1040ez--2014.pdf">https://www.irs.gov/pub/irs-prior/f1040ez--2014... <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040ez--2014.pdf">https://www.irs.gov/pub/irs-prior/i1040ez--2014...>

2014 Tax Tables <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/i1040tt--2014.pdf">https://www.irs.gov/pub/irs-prior/i1040tt--2014...>
Publication 17 Tax Guide for 2014 <a rel="nofollow" target="_blank" href="https://www.irs.gov/pub/irs-prior/p17--2014.pdf">https://www.irs.gov/pub/irs-prior/p17--2014.pdf</a>