To set up your Linksys wireless extender, begin by plugging the device into a power outlet near your router. Wait for the light to turn solid, indicating it's ready for setup. Connect to the extender's default WiFi network, then launch a web browser and enter extender linksys com in the address bar to access the extender Linksys login page. Follow the on-screen instructions to select your home WiFi network and enter the password. Once configured, you can relocate the extender to a location where the WiFi signal needs boosting. For any difficulties during setup, visit the Linksys support site or use the extender Linksys login page for assistance.