By definition the Interweb is a international web of telephone wire and network connections. When connected via a computer or other device, the user can obtain information from almost any part of the world and almost any information is available. Certain "Web-sites" allows users to submit information about anything which then allows any other user to access this information.
A) I wanna buy a used car -where should I look for it?
B) I suggest you search for it on the Interweb.