When we were touring America, I bought a GPS in Las Vegas. A Garmin Nuvi 1300, the cheapest one I could find at the local Fry’s.
Back home I loaded the Southern Africa map onto it, and it’s been working fine since.
Now, I’m planning two trips, firstly up to Pretoria for AAD and then up to Etosha for fun. I’ve identified places of interest using Google Earth, they’re all stored in a .kmz file.
1. Save As .kml (which is just the uncompressed kmz)
2. Download GPSBabel, convert “Google Earth (Keyhole) Markup Language” to “GPX XML”.
3. Download EasyGPS, load the .gpx file, plug the Garmin in via USB, select the waypoints, transfer them to the GPS.
Easy and free.
(AppData\LocalLow\Google\GoogleEarth)