"How will the internet know my house is not a hot spot?"
Um, well, that's one of the more unusual questions that I have seen in a while!
Sorry, it sounds like I had better start from the top:
Having a laptop PC is no different to having a desktop PC, apart from finding it easier to carry around! You will achieve access to the internet in exactly the same ways that everyone uses with desktops. These are:
1) Plugging a modem cable from a phone socket to the modem socket (RJ11) on a desktop or laptop PC, then signing up to a dial-up ISP (Internet Service Provider)
2) Using an ADSL or Cable broadband modem (normally external with a desktop; always external with a laptop) to access a Cable or ADSL broadband ISP, paid for on a monthly basis. This is connected in basically the same way.
3) Replacing number 2 with a modem/router (ADSL) or router (Cable) to provide internet access - optionally via wireless signal - to more than one PC.
That's the basic stuff; there is way more beyond that which you will need to know/learn.