We first learned about geocaching from an article in our local newspaper - actually, it was a brief BTW in an article about letterboxing ("And for you techies out there, geocaching is a similar game using a GPS Unit.")...
But we forgot about it for awhile.
Then, when my Mom started at her new job, she discovered that one of her coworkers lives in our neighborhood and is an avid geocacher, who quickly pointed out to us that there are hundreds of caches in the natural park right behind our house! 10 years living in that house and we had no idea
So, with the help of a sizable tax refund (for a GPS Unit) and our newfound geocache teachers (Dashon), we were off - and still having a blast to this day!