How can I create internet access (wifi?) for myself at my no connection house? Can I buy something to plug in my computer?

I really need to study all night, including internet research, but the place I’m staying has an issue with their conncection. Apparently there is supposed to be wifi but they can’t connect somehow. I am working on trying to find out what’s up with that so I can find a solution, but until then, I am thinking about other ways I can get my own wifi going, because I really need to study. How can I do this?

TIA!