im buying a laptop and i was told if i pay 20 $ a month with tmobile i could have

[Frank]

internet on my laptop? im buying a laptop and with my phone company i was told i pay 20 a month n i could have internet on my laptop how is that done and what is it called i know alot of people said wifi gets u internet but i want to have internet wherever i go so what do i tell my phone comany tmobile please help i dont know much about computers i just wanna put internet in my laptop