I don't know Ake and outside a term of classical guitar lessons, I'm self taught.

Re the session bit, a pretty near mental block for me is hearing the chords (and there maybe several versions and tunings that work) that would really go with the dance music. I'd get away with some but just say plain G C D chords often sound naff..

I think that's just me but (actually I might get away with this but you'd know the tune). I'd could rate my own chances of getting to pick the melody to Athol Highlanders on guitar as higher than being the accompanist.