Can i connect a wireless adapter to a cable modem?

I just ordered the white motorola surfboard cable modem (wired).
And like to connect a wireless adapter to it, via a hub, or ethernet
to usb hub, the thing that confuses me, is how i'm going to install
the software? Well, the linksys ae6000 wireless adapter is the one
i want -- and i know linksys uses "app enabled" right? So, would i
get wireless internet from this type of connection? As, i don't have a
computer. But i do have an iphone 5! YES -- i already know i would
need a wireless router -- but i'm cheap, and trying to think outside
of the box…

Added (1). First of all -- you DON't need a computer for every damn, thing ok!

First things first. Invest in a decent computer.

Yes!

Yes, for desktop you should have a Wi-Fi adapter.