While this is not a full tutorial per se, it is useful to individuals interested in selling their art works. If you have portfolios full of images you know someone would purchase, why hang on to them? Make some money, make lots of money. There are resources out there for you to find buyers.
I recommend the Artist’s and Graphic Designer’s Market(2009). For $28 you can discover a world of art buyers and markets. The book is filled with insightful articles written by artists, art directors, lawers, etc. to help you on your way to being in the business of art. Beyond the articles are lists of people and places to sell your art, whether it is fine, graphic, illustration, decorative, or design.
Once you’ve noted your best bets for selling your work, look into the business aspects of the art world. Yes, you will be a business person and must act as such. For details on that side of the biz (and your brain) pick up The Business of Art by Lee Caplin and I’d Rather Be in the Studio: the Artist’s No-Excuse Guide to Self Promotion by Alyson B. Stanfield. Not only do these books introduce the artist to business techniques and tools, they really inspire him or her to get the ball rolling on promoting his or her work. I have gotten more done in the past three weeks since reading these books than I have in the 31 years I’ve been creating art (only 20 0f those years have rewarded me with art commissions).
I chose a career as an art teacher for two reasons: 1.) I thought I could make a positive difference in the lives of even a few children by sharing my passion for art, and 2.) because I was unsure of the stability of art as a career. Art as a career is as stable as you make it. Being informed about the world (not worlds) of art and business are paramount to your success as a professional artist (though some people would argue that your artistic skill is most important, followed by your business sense).
I will address specific aspects of these books as they arise in my own career. Stay tuned and help inform the readers of this blog and myself if you are in the know about art and the business of art (or any of the arts).
Hepster Design Ink's Blog 
Ken: Thank you for recommending my book. I’m glad you found it helpful–particularly since you are a teacher. I hope you’re able to continue to use it as a reference for your art career.
Alyson,
Thank you for writing the book! I had stagnated in my art career trying to find outlets. Actually, I was overwhelmed and quit looking for outlets until I began reading I’d Rather Be In the Studio. I thought it was pretty cool that you mentioned Twyla Tharp because as I was reading along and connecting the routines and habits, I thought I would get The Creative Habit from the library next. Do you mind if I link directly from my article about your book to artbiz.com?
Thank you for the comment on my blog. You are the first on this site.