E-Book In HTML Format :

When designing an HTML compiled eBook, you must create an HTML document (web page) for each page within your eBook. These pages should include all of the following:

Introduction - You can create an image that compliments the theme of your eBook, add your company logo and eBook title or whatever you'd like. You should begin typing your introduction on this page explaining what your eBook is all about.
Foreword - You can include information in regard to warranties, copyrights, trademarks or even an editorial.
Table of Contents - A Table of Contents is really optional. If your eBook contains only a few chapters, a Table of Contents really isn't necessary. However, if your eBook contains many chapters, it is highly recommended that you include a Table of Contents. This will enable your readers to quickly locate important information. 
About - This is really an optional page. It really depends upon the type of eBook you're creating. If you're writing your information in the form of a how-to manual, then you should include an "About" page. This page should be used to tell your readers about your eBook, your company, your website, yourself or whatever you'd like. Make sure you provide your website address and your contact information.

E-Book Navigation 
HTML eBooks are created just like a website. In order to navigate through the pages, you'll need to include good navigational links on each page. In addition, each page you create should contain links to the previous and next page within your eBook. For example, page two of your eBook should have navigational arrows or links to page one and page three. Page three should have navigational arrows or links to page two and page four and so on. 

E-Book File Names 
All of your files, including HTML pages and graphics, should be placed within a folder by themselves. Your main or starting page of your eBook should be called, "index.htm" or "index.html", as many HTML compilers require this. You can name the rest of your pages anything you'd like.