This document provides instructions for logging into D-Link routers via several methods: wired connection to the router, wireless connection, or remote access. It details the default username and password ("admin" with no password), and steps to connect an Ethernet cable from a computer to the router's LAN port, or to wirelessly access the router's configuration page by entering the router's IP address (192.168.0.1) into a web browser. It also explains how to set up remote administration by enabling the feature and setting the administration port number.