The whole idea of playing the classical guitar without nails — with just the flesh of the fingers — holds a great deal of appeal for me. Rob MacKillop’s extensive web site is a great resource — and source of inspiration — for players of (or with) the flesh (of the fingers). His own videos are excellent, as is his touch with the guitar. The history he lays out, of players from the 19th century to the present day, is compelling.