Instead, I'll talk here a bit about my experience and what I learned.
Mainly, there's so much more to it than just writing the book...
For example, you'll either need to be a graphic artist/illustrator, or hire one to make your cover. If you're not an editor (or even if you are!) you might want to hire one to review your book.
You may be a writer, but are you good at desktop publishing and layouts? Do you know what a gutter is? If not, you'll need one.
Do you read ebooks? If not, you may need to bring in an expert to help you create the ebook version of your book.
And then there's actual act of publishing... Do you want to join KDP Select, Amazon's exclusive publishing system? What about publishing to platforms other than Amazon? D2D or Smashwords? What about the printed version?
In all, I counted about a dozen things that I either had to know, learn, or hire out. I could do the layout myself, and I muddled through the various publishing steps (or, rather, I'm still muddling through). But I couldn't make my own cover, and I'm a firm believer in not editing/proofing your own work.
And then there's marketing! This is most definitely not my strong suit. Arranging blog interviews/tours. Getting the word out. Finding places to show off your book. This is all alien stuff for me. Things about which I should have done (and am doing) much more research.
At least now that I've been through the cycle once, I can take the lessons I've learned and the friends I've made and apply them to books going forward.