In the meantime, I ...
- bought the bar codes to go with the ISBNs
- rewrote the back cover blurb describing the book
- checked the new corrections
- insert the Library of Congress number on the copyright page
- change the blurb on the back cover
- send me the absolutely final cover and inside pages
While I'm waiting for all of that to happen, I will get prices on printing "readers' copies" and make a list of people to send them to. The purpose of readers' copies is to put the book in the hands of media, bookstores, and reviewers; request reviews and testimonials; and try to arrange for appearances and presentations.
At this point the publishing and promotion steps overlap until the printed book is in my hands, on Amazon, and in the bookstores. Then, the real work begins!