ePub Books
Thursday, November 4, 2010
I came across this short but good overview: How can I create ePub files from my books?
Ultimately, an ePub file is merely a zip file consisting of XHTML and XML metadata, so it is possible to create one "by hand" yourself.
If you have five more minutes to spend, you might wanna look at this introduction to the ePub format as well.