Ebooks work like old-fashioned webpages. What goes on behind the scenes is just one big long scrolling webpage. This means that “pages,” as we think of them, are an illusion. There are no pages in ebooks. The illusion of pages is created by careful conversion and by the eBook-reading devices.
Experienced eBook formatters know how to use coding to provide the appearance of page breaks before Chapters, and white space to show scene breaks.
Footnotes can't be put at the bottom of a “page,” like we do in print, because there are no pages. Therefore there is no “bottom of a page.” But you can put your footnotes as endnotes to your chapter or to the book, whichever you prefer. Sometimes, if there are only a very few notes in the whole book, you might like to just use a bracketed number right there in the sentence. Like this, to cite the footnote. We can do whatever you like best.
To make using endnotes or footnotes easy, we create two-way links. The reader clicks the superscripted number2 link in the narrative text--and then is "jumped" to the footnote. After reading the footnote, she simply clicks the footnote number to be taken back to the location in the text from which she jumped. On many devices, there is also simply a "back" button that serves the same purpose--to take the reader back to where she was in the narrative flow. Easy to use!
You can see some examples of what "pop-up footnotes" (footnotes that do display on the same page as the superscripted or annotated note number--some devices have that capability) look like in the Complex Layouts Gallery (look for the Demand of Blood pages).