Hi Folks, I've already filed my federal taxes, only need to do state. But! I lived in both Florida and Massachusetts in 2019. Where do I accomplish this? Thanks!

[xmasbaby0]

Florida has no state income tax, so there is no income tax return for FL that you need to worry about.  You do not say how long you worked/lived in MA, but you will need to file a part-year return for MA.  Did you use TurboTax for the federal return you say you filed already?  You can only prepare a state return using TurboTax if you used TT for the federal return.  If you used TT for your federal it already asked you where you lived in 2019 and gave you a chance to say you lived in MA for part of the year, and in FL for part of the year.  Did you enter that information?