Hi Guest
I am in a similar situation to you. I have recently started to learn Dulcimer, it's a fantastic instrument just strumming along and fiddling around produces such beautiful sounds, really theraputic and calming. Actually haven't got much further than that really except trying some different tunings. Maybe someone could tell me a tuning that suits a low voice, I haven't found a good one yet!
Misery mentioned Graham Hood, he is fantastic he's a friend of mine and was the one who got me into the Dulcimer. He lent me a great book called Lapidus on Dulcimer by Joellen Lapidus ISBN 0-89705-007-X I don't know if it's still available, but if it is it's well worth getting. It is very clear and easy to understand. If you PM me i may be able to give you Grahams contact No, but obviously will need to check with him first.
Good luck and enjoy.
~Debs~