1) Linksys router setup involves connecting the modem and a computer to the router via Ethernet cables, then accessing the router's default IP address (usually 192.168.1.1) in a web browser to configure the router's network settings. 2) The configuration process allows changing settings like the wireless network name and password as well as Internet connection settings depending on the user's internet service provider (ISP). 3) Common ISP connection types are cable, which may require cloning the MAC address of the computer, and DSL, which may require configuring PPPoE settings.