Click "New WiFiCom", enter a device name, then click "Create"
On your newly created WiFiCom page, scroll down to the "Credentials Download" section
Recommended: Use the "Local Only Configurator" and enter your WiFi network information (this is not shared with wificom.dev). Otherwise you will need to add it to the file after downloading.
Copy secrets to your WiFiCom
Connect your WiFiCom to a computer using a data cable
Put your WiFiCom into Drive Mode
Up to v1.1.0: found in the main menu
v1.2.0+: found in the Settings menu
Copy the secrets file into the drive named CIRCUITPY
Safely remove / eject the CIRCUITPY drive from your computer