The document outlines the steps to add a second LAN to an existing network in Packet Tracer, including: - Adding a switch, two PCs, and a server to the new LAN - Configuring the switch, server, and router interfaces with static IP addresses - Setting up DHCP, DNS, and HTTP services on the server to provide IP addresses, domain name resolution, and a web page for the new LAN - Testing connectivity between the new LAN components and the existing LAN to validate the new network configuration