Sounds like you want to tether as mentioned, via usb.
The hotspot option is the best bet, and probably the easiest way.
On my at&t all share plan, the hotspot data is drawn from the alloted amount on my account. Hotspot is included for free due to the type of account.
Tethering is a whole other ball of wax, as some say. The carriers will want you to subscribe to a tethering feature to "legally" do this, but I am sure someone has an answer that involves rooting a device and sideloading software.
Good luck.
It's not wrong to fondle the s pen.