How can I get past the friendly retirement reminder so I can enter income?

Here are the steps:

• Sign in to your account, select Pick up where you left off
• To your left, select Federal
• From the top, select Wages and Income
• Follow prompts

Or if you know the name of the form, for example, W-2, use the "Jump to" link.  Here are the steps:

• At the right upper corner, under Search, type in "w2" and Enter
• Select "Jump to" link
• Follow prompts

As a US citizen or US resident, you are required to report worldwide income including US source income.  Taxable income can include wages, salaries, bonuses, commissions and tips.  For more information about what income is taxable, here are the link: Taxable income