|You will go out from the Ethernet port on the modem to the "Internet" (external) port on the router using a patch cable (aka "ethernet cable"). |
You plug client computers into the LAN port(s) on the router. You will have to configure your wireless network from a computer connected to the router with a network cable. .
Once you have the router connected to the modem and a client to the LAN port on the router, you will then follow the setup guide for how to connect to the management interface on the router so you can configure your wireless network.
When configuring a wireless network definitely use WPA2 encryption and a complex key (wifi password) so as prevent you from being hacked.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.