I think I didn't express myself clear enough
2. When I said there is a HTML file with a folder which contains images that are linked to this file, I meant that when you open this HTML on your PC you get a nice book with pics that are located in the images folder.
3. So, you can navigate between chapters?
I think this type of books usually have a TOC html file and you click on chapter 1o, go there, read it and click on some sort of arrow which takes your forward to next chapter or back to a previous.