TurboTax Deluxe & State

I downloaded TurboTax Deluxe +_State.  I have 5 Federal e-files available.   The information I see says I have one state download.  Does that mean one state e-file or merely a download of the software?   Also, I have prepared a return which has NO STATE TAXABLE INCOME and TurboTax keeps asking me to prepare a State return.    It also says for $19.95 I can e-file the State return and I thought one state return -was at no charge.  Can you please advise me on charges for a state return?  If this return I have prepared has no state filing requirement, then when I get to a return that does have state taxable income, what is the correct procedure to follow: print it out and mail it or do I have ONE free state e-file.  I am not clear just what I can do with a state return with this software package.  Thank You