Mark,
I wish I could find a guitar teacher around here that could teach fingerpicking blues. Most around here teach rock, and I've got no interest in power chords. I work in the same office area as some sound and lighting guys (who are all accomplished musicians) and know literally everyone in the music biz around here, and they say there just ain't a teacher I'm looking for. If there was someone available, I wouldn't be trying to learn thru pdfs and mp3s, believe me. So as second best effort, I'm tapping into the vast wealth of knowledge that is the Community Mudcat.
As for the guitar being too big, I can't believe that's so. Actually, I was thinking it was too small. It's a (borrowed) Gibson B-25, and I'm 6'0" tipping 205 with long limbs and a short torso. I'm thinking that the difficulties with my right hand positioning is because my arms are too long for this guitar. Is that a likely possibility?