If you have a wireless router in your house then you have a wireless network that is yours. It will have its own unique name and may or may not be password protected (Open or secure).

When you turn on the laptop for the first time you will be asked to create a name for the laptop and maybe a couple other basic questions.

When windows boots for the 1st time you will be prompted by the built in Wifi to choose from the list. Choose yours, enter the password if needed and thats pretty much it.

A laptop will default to connecting to wifi before the hard wired port.