Nicole Kaeding is one of my go-to people on taxes. She just posted a thread on navigating the process of getting your $1200 (more or less) Recovery Rebate government check. Read carefully.
Update
From @byHeatherLong SPREAD THE WORD: Treasury just launched a website where people who don’t normally file tax returns can enter their info to get the $1,200 check.
The website is here: https://www.irs.gov/coronavirus/non-filers-enter-payment-info-here
This is much easier that filing a tax return.
Enter your: Name, Address, SSN, etc