There are no real materials for this spell. It'll come from
the energy you can get when you ground and center or just petition
the Goddess. Remember though, that you should say thanks, after
all this is petition magic.
What you do is charge up, ground and center and otherwise do
what you do for a spell. Then you say:
"Aradia, Goddess of the lost, the path
is murky, the woods are dense, darkness pervades, I beseech
thee, bring the light."
After you say this, put feelers out and hopefully the goddess
will help you to extend them in the right direction. Feelers
are nifty things, if I'm looking for someone, I usually find
them in no time after that. What should happen is that you just
run into the person you are looking for, or find the place you
need to go. And remember... goddesses, like all mothers, like
a little appreciation after helping you out.
And we're done...