Check out episode 7 of The Hexagon: A Podcast For Singer-Songwriters. It's a podcast about 6 aspects of being a singer-songwriter today (songwriting, performing, recording, business, growth, and life). Georgia English and I talked about the various ways she approaches songwriting (as well as how songwriting theory can sometimes get in the way of the natural flow of songwriting), her recent tour and collaborating with a booking agent, teaching others the craft of music, and more.
Some other things we mentioned:
Leesta Vall Booking
http://leestavall.com
All You Need To Know About The Music Business
by Donald Passman
Georgia mentions some teachers she worked with in the past:
Paul Rishell and Annie Raines (in Boston area)
Dave Ricketts (in San Francisco area -- not Seattle, as mentioned in the audio)