to get the most out of your GPS receiver

1. Even if your receiver has good maps, sometimes it just can't find an address. Check before you go, and if necessary, use a site like Geocode to convert street addresses to coordinates.
2. If your GPS saves a list of waypoints, you can map these onto satellite imagery with TerraData and a lot of work, or a little Perl script.
3. Before you buy a GPS, research the unit you're interested in at Amazon and at http://gpsinformation.net/