You cannot report the sale of your home in TurboTax Free Edition. The sale of a home is beyond a very simple tax return. However, if you did not receive a Form 1099-S for the sale, and your gain was less than the $250,000 exclusion, you do not have to report the sale.
If you want to file a tax return, even though you are not required to, and you do not have to report the sale of your home, you could just enter your Social Security income and file the tax return with Free Edition. However, you said you "basically" had only Social Security income. I take that to mean that you also had some other income, although it might have been only a small amount. You didn't say what other kinds of income you had, so we can't tell whether Free Edition would handle it. If you file a tax return, you have to report all your income, even if you don't have to pay any tax. Depending on the type of income you had, you might or might not be able to use TurboTax Free Edition.
