The GPSr saves logs as "Field Notes".
If you're using the "Garmin Outdoor App" (the built-in App), it appears that the file structure and file names are the same one you'd use with other Garmin GPSrs. If so, go to the Field Notes section of the Geocaching site, connect the USB cable, and follow the Garmin instructions.
I have an idea how you can send field notes directly over wifi. If the above info generally works, and if you get Google Chrome and Astro File Manager set up (and perhaps other web browsers and file managers would work), it looks like you could upload field notes over wifi.
Using the field notes and the usb cable worked like a charm. thanks for your help.