How do I connect more than one computer to the internet using one router in sepa

[gerry07]

I have two computers and a laptop. How can I pick up the internet using one router? They are in separate rooms. I done it b4, but was done by someone else, who's not here. I don't remember how she done it, and I'm having a problem

 

[PhilFrisbie]

A router is designed to connect multiple devices to one Internet connection.

Do the computers and laptop connect with cables, or wirelessly?