Do you want to do-it-yourself—the formatting, styling, and set-up of your book interior for print-on-demand and an ebook? You can buy templates, but you wonder, “Is there a learning curve”? The answer is most certainly, YES.
Get the “Faqs” on using a pre-designed template: https://www.bookdesigntemplates.com/faq/
Note: If working with templates is not your thing feel free to contact Debbi at MyBookDesigner.com; our work is surely collaborative.