If you plan to sell your ebooks, HTML Executable gives you the option of turning your HTML documents, websites or PDFs into trial ebooks. Trial ebooks can display nag screens at startup and optionally offer limited trial periods or restrictions (10 days or 20 runs for example). You can also lock pages of your trial ebook.
The following video tutorial for HTML Executable shows you:
Click "Play" to begin. HD video format is available: switch to 720p (HD) and click Full Screen for optimal image quality.