To add income:

1. Open your return, then click on the Federal Taxes tab
   You may see Continue, then I'll choose what I work on
2. Scroll down to the "Wages and Salaries/Income" section
   Online users may need to click Show more to expand this section
3. Next to "Wages & Salaries", click Update/Revisit/Start
4. Follow the screens to enter or import your W-2

I hope this helps!