IMac at home with no internet.

I have an iMac at home with no internet connection.

I use a MacBookPro with wich I can obviously connect to the web for download and verification.

My question is how do I get PhotoshopCC loaded on the IMac at home, and if I can then how would verification work?

Am I also going to be forced to pay for a home internet connection to use Photoshop?

I actually don't mind the monthly or anual charge, I've upgraded Photoshop since v.2.5.

I do have an issue with not being left with a usable product if I decide to stop upgrading.

thanks