I would go to the library and look at the reference materials there. There are market specific books for short stories, poems, etc. You can sit down and take notes and not be standing in an aisle, and the librarians will help you find the information you need. First books are very hard to sell; and poetry even harder. I would, if I were you, try to get my poetry and short stories published in magazines before trying to sell a book. Self-publishing has been the start of many a poet's career, and has an honorable tradition--but it's harder to do all the marketing yourself. I would never put on the web what I want to see in print. It is just too easy to have your work stolen, and some publishers do consider it "published." If you have some things here that aren't in the book, then it would be perfectly fine to share that with the public, but it would be better and more professional to have your own website where you can market your book in case the publisher doesn't do the job for you. My two cents. Not worth much since I'm unpublished and likely to stay so. Do share with us your success story. :)