If you have not e-filed your tax return, in TurboTax Free edition, simply follow:
1. Sign back into your account and select Take me to my return
2. At the right upper corner, in the search box, type in W-2 and Enter
3. Select Jump to w-2
4. Program will take you directly to screen, Here's your W-2 info
5. Under Total Wages, select one of the blue links Add another W-2 ( See attached screenshot)