yay my garmin vista arrived this morning had a little play with it

it came with 2 discs 1 is the owners manual (self expalnatry)
the other disc is trig and waypoint manager

what do i need to do with the second disc (trig n waypoint)

and is there any other advice you might be able to share with me on using my vista ?? i mainly going to use it for geocaching

im not that techy savvy so a lot of the stuff on there is confusing
but so far im impressed i put the batts in turned it on and it had located 6 sattalites from inside my house i cant even get a lock in our garden with my nokia n95

many thanks darren