I sing better than I play any instrument*g*, but my new harp and I now have an agreement(she won't fling any strings in my face and I'll actually be serious about learning to play her... so far, agreement is working). I can play the tin whistle passably well, I've tinkered a bit with accordian and mandolin. Guitars, unfortunately(at least my mom's guitar) seem too big for me to comfortably hold, so I'm holding out for a smaller one someday. I have a zither and an autoharp, too, which I can pick tunes out on.
As to what kind of songs, mainly scottish/english/irish ballads(starting out slow, building up to fast), and some religious songs I happen to like the tunes of.
I'm hoping one day to be good enough to be a musician at a Renaissance Festival.