Writing your eBook
I believe there is a strong difference between digital text and pen on paper. A word processor allows us to blog away heedless of cognitive thought or direction. Spelling is also taken care of, up to a point. Whatever floats across the frontal lobe can appear on the screen unedited, unrehearsed. Then it can be rehashed at whim, sometimes at risk of diluting the inspiration or extracting the juice of the thing entirely.
Applying ink to paper requires more effort. It can be written only once. This initiates planning the sentence and often the full paragraph in the mind before committing pen to paper. Thus a more cogent argument appears in black and white.
Planning
If you have a business and you want to present your particular contribution to the field in an easy-to-grab eBook, you may want to scribble down on paper a clear goal for the presentation, who are you writing for? What do you want them to understand about your company? Then jot down a beginning, middle and end; making a clear statement as introduction and winding it up with an equally clear response.
eBook language
eBook readers tend to be in a hurry. They are on a train, plane, any other form of transport, or they are at the office browsing for information. A Tolstoy or Iris Murdoch can be enjoyed on iBook, but only on holiday or as bedside reading. And that's because the language was designed for print, first and foremost. It takes time to savour the nuances of prose. It takes a fraction more time to turn a physical page.
In general eBook readers seeking information appreciate short, sharp pearls of wisdom delivered in readily accessible bytes. For example; an entire message can be sent in emoijs. :-) Whether it is received and understood could be another matter.
The definition of communication is: message leaves A; is received by B; confirmation of message received is returned to A. Communication is achieved if both A and B reach common understanding. eBook language depends on this definition being in effect in the simplest and most direct manner.
So plan your e-content. Choose your style carefully and make it neither Tolstoy nor emoiji, but somewhere in the happy middle.