I just picked up a used Garmin GPS Map60 csx in basically mint condition, with very little use on it. I want to use it mainly for geo-caching, and not as a regular gps at this point. So as near as I can tell, this thing has no maps loaded in it, and also none on the micro sd cards that go in the back. I got a 256 mb and 2 x 4 gig cards with it. When you go online to Garmin, the maps seam very expensive. Is this what people are using, (the actual Garmin maps), or is there a place/site that you can get cheaper or even free maps? I guess at this point I'm looking for trail maps. I'm not really sure how this all works, and my son (who's excellent with computers) and I are trying to figure this all out. Any help is appreciated. We've been checking things out on u-tube, but still need more help.