I was attending NECC (for simplicity sake now called the ISTE Conference) in San Diego in 2005 an had just finished a session on Geocaching.  The local cachers had pulled together a number of GPS units and placed a series of dummy caches around the convention center.  I had a choice… sit through another PowerPoint where someone tells me about the importance of hands-on learning, or experience it for myself.  So I headed out and wandered.  I had a basic Magellan Explorist (I now use a Garmin) I wandered & wandered getting a basic knowledge of the cenvention center which would help me at Comic-Con.  Yes, I did get a shout out from someone nearby as I looked for one of the caches… but hey, it was my first time.