All in all, ebookc is an authoring and publishing tool nearly as powerful as DITA or DocBook and their advanced conversion toolkits, but being based on HTML and on CSS, it is much easier to learn, use and customize. Moreover you can create with it ebooks which are more interactive (audio, video, slide shows, multiple-choice questions, etc) than those created using DITA or DocBook.
If the above primer seems convincing to you then you should really give ebookc a serious try before attempting to adopt DITA or DocBook. Download ebookc from this page.
Alternatively give it a try using XMLmind XML Editor Personal Edition
XMLmind XML Editor has out of the box, extensive support for creating an ebook specification and its source HTML pages and for converting an ebook specification to a number of output formats. XMLmind XML Editor Personal Edition is free to use by many persons and organizations.