So, after years of humming and mainly hawing, I finally got round to buying myself a celtic harp! It came yesterday at around midday and, about 6 hours later, I was still trying to get the bugger tuned. Finally getting there, I discovered in an astounding shock development, that I cant actually play the thing. So many strings, so few fingers and no frets at all that I can find.....
I think I've got the general idea but its the fingering that I'm having problems with, cos I read somewhere that you only use the thumb, index finger and ring finger. Is this right? Does it apply to the melody hand, too? And, I find that the inside of my right forearm is getting pretty sore where it rests on the harp body. Should there be any contact between arm and harp??
All help gratefully recieved! Also, if anyone knows any good online tutorials, I'd be very thankful,

cheers, Jake