How can my laptop go web surfing through a cell phone connection?

I don't have $60 to pay for a 5GB data plan. So I'm think how I can
have my laptop go online through a cellphone connection. I heard some
way-smart people know how to make that work. I wish I can do that
too. But what phone is required exactly? How does it work exactly?
Do I have to pay extra for anything? Which cell phone company to go
with? Thanks.