Standard tuning is from the lowest (thickest) string up G,D,A,E. If you play any string at the seventh fret it is the same note as the open string above it so you can tune that way. Another tuning is A,E,A,E, or if you don't like tuning strings higher than they should go, G,D,G,D. It's a beautiful instrument.

Oh and don't run yourself down when you start an instrument. There's no reason at all why you should not become a brilliant player - as long as you practice regularly. Other people only make it look easy because you can't see the effort they have put in over the years.