Geocaching is very simple to get started into as a sport, the best way to get this into your program is to try it for your self first, its much simpler to teach a sport you have played yourself.
The first three steps…
Create a free geocaching account at geocaching.com
Explore, find and log geocaches. There are more tools to make geocaching even better with a Geocaching Premium membership, but see how you get on for free.
Find your first geocache
Use Geocaching.com or the official Geocaching® apps for iPhone and Android to pick a geocache and navigate to its location, you don’t need a GPS to get Started.
Geocachers follow the code
Once you find it, sign and date the , re-hide the geocache exactly how you found it, and look out for the muggles (Non Geocachers), and share your experience online, each Cache has its own page with online logbook. Geocaching Etiquette
Getting Started video