A:
I have the T-Mobile add on plan with the Hot Spot that I can easily set up with a few clicks within the Hot Spot app on the phone and have my laptop connect via WiFi through my phone.
I can also use the USB tether option where I can have the cell phone connected through USB to the PC and have the PC get internet access through my phone while it is being charged.
Both options are included in the Hot Spot app/settings.
And of course you can just use the phone off of your home/business WiFi if you don't have a good signal or data and surf the internet on the phone that way.