How do I find my pin number or my gross income from last year?

If you used TurboTax last year you can find your adjusted gross income by downloading your 2015 return.  You can also create an account at irs.gov and request a transcript of last years return which has it as well.  This is what I had to do and it was shockingly simple.

do you know where I would go to on turbo tax to download the 2015 tax return? I can't seem to find it.

On the top left under the TurboTax header there is a toolbar.  There's Overview and then MyTurboTax.  Click MyTurboTax then from the dropdown click My Tax Timeline.  Then towards the bottom it says "Looking for a Prior Year Return" then click Load My Tax Timeline.  If you used TurboTax last year you should be able to click Download/Print by 2015.