How do I purchase the deluxe edition without the state so I can do both mine and my family's taxes off line

You can find Deluxe without state anywhere else but not directly from Turbo Tax.  Look at Amazon or Walmart, Target, Costco, Staples, etc.  any of the big name stores.  You need the one that only says    Fed+Efile   Not  Fed+Efile+State.

TurboTax Deluxe CD/Download version can be purchased through the TurboTax website at https://turbotax.intuit.com/personal-taxes/cd-download/