Get started with your Linksys AX1800 setup by connecting the modem and power supply. Visit the Linksys router login page through your preferred web browser. Set a strong password for administering the device, and then select the type of internet connection, which is your ISP, and enter additional credits as may be needed. Once complete, name your Wi-Fi connection, or SSID, assign a strong password to both 2.4GHz and 5GHz, and customize your network with features such as guest access or parental controls. Finally, arrange your router in such a manner that there is even coverage within the home.