Here is a basic template for a novel in LibreOffice format. It contains styles for headings, text
with drop caps, front and back matter, etc.
You just need to fill it with your novel, and tweak the different styles.
This template is valid for publishing in print (by exporting to PDF, and using Lulu or Createspace)
and also for exporting to Kindle / ePub by using Alkinea and publishing online (for instance
with Amazon KDP.)
Here is another template for an interactive type of novel, where the reader chooses his path in the story.
It contains an the end of each chapters links to other chapters.