Easy and Risk-free
The software that I am about to introduce you to, is a powerful professional quality tool, that makes it simple for anybody to get started in Information Publishing.
If you can create web pages - then you can create and publish Ebooks.
(and even if you can't, most modern word processors include a "Save As HTML" feature).
Simply create a set HTML files containing the information you want to sell, and then run Activ Ebook Compiler - and you'll have a self-contained Windows Program (".EXE") which users can download and run, to view your Ebook. You can even restrict access to parts of your Ebook with passwords, include links to relevant web sites, or sell advertising space in your Ebook.