The friends who introduced me to geocaching (and God bless them for it!) told me, "Don't hide a cache until you've found a hundred of them."
I don't know if you should wait that long, but if you stick with it for a while longer I think you will get a feel for the kinds of caches you enjoy finding, the kinds of places you enjoy looking, whether or not you have a theme for your cache, whether or not the coordinates are given in puzzle form, etc.
Hope that helps.