Go to
www.gpsteamchallenge.com.au/index.php?country=0click the "register" button on the right hand side and join a team. Then you'll really get to use your device in earnest.
But as the other guys say, take it for a walk or cycle first to make sure it's all working. There's a lot of ways to get the set up wrong, better to discover that on a practice run first.
OH and another important thing, you need a water proof pouch for it, it won't last long without one.
A lot of us use a "Paqua midi", Whitworths in Sterling highway have them.