Lisa, it is quite a process to go from draft manuscript to publication to sales. As with everything, it gets easier after the first time through when you know how it all works.

My book "Successful Business Analysis Consulting" (https://www.processimpact.com/karls_books/sbac) contains chapters on how to write a book proposal for a publisher, contracting, different types of editing in the production process, self-publishing, co-authoring, and so on. That would at least give you an idea of what all might be involved.