I think this tutorial was the most helpful because it focused on the importance of using section breaks correctly to get your headers and page numbers on the right pages.
This is how I spent the last few days and why I forgot all about a new post for today. Hopefully the above tutorial link might help another writer and keep them from being frustrated.
I guess what this taught me is that self-publishing is not easy. Unless you want to pay someone to do all the formatting, you have to learn how to do it yourself. If I did it more often, I'd remember how I did it before, but I don't, so every time I am ready to publish a new book I have to try and re-learn how to correctly add the headers and page numbers. Maybe I could take better notes for the future. LOL