This is a wonderful article on Jerry Garcia in this Guitar Player Magazine on line that I found. It has some great stuff from interviews with Jerry and other interviews with Lesh and Herring and much more. All very interesting and lots to be learned.
Check it out here:
P/S - One part of the interview that really struck and something that I'll never forget was when Garcia said this:
"The only danger is falling too much in love with guitar playing. The music is the most important thing, and the guitar is only the instrument"