If you don't mind cracking open the ePub and editing template.css, then adding rules like:
should force each paragraph whose style is mapped to an h2 tag on to a new page. Whether or not it works will depend on how good the ePub reader is at implementing CSS. It seems to work for Digital Editions and also Kindle, if you convert ePub to Kindle format.
This doesn't help at all if you are trying to force sections into separate XHTML files, though.
Footnotes don't exist in HTML (which is what an ePub is).
Hi,Steve / Nigel
Thanks a lot these tips are great.
I believe that page-break-before: always; dont work in iBooks. But is a great option
Footnotes are conveted to hyperlinks from InDesign to EPUB.
Is a basic element in books, even print or digital. When a author wants to explain more about some issue there is a link to footnote from text. Then there is other link from footnote to back to text. Very useful and InDesign does it automatically