Create Your Own E-Book with Open-Source Sigil

"But have you ever wanted to create your own e-book? Maybe it’s a Creative Commons book that only exists in HTML format. Or perhaps it’s a set of blog posts. Or maybe it’s a student’s dissertation. Or even your own research notes. How do you convert these into an e-book? One answer is Sigil, a WYSIWYG open-source XML-based ePub editor...."