Rewrite nonfiction book

Num. of words: 20000
Tone: Other
Extra notes: Rewrite a non fiction book, taking the essence of the existing book and bring it into a new form, using advanced techniques (NLP, hypnotic words, mind bending language ... If useful!) to capture the attention of the reader and cause him/her to act. At the same time using strong logic (cause-effect).


Rewriting
Maybe if used “rewrite” not correctly. What I mean is: Taking the essence of the existing book and bring it into a new form.
There are some reasons, why I want this:
1. I think, it is possible to deliver the essence of the original book in a much more reader friendly way.
2. I think, it is possible to deliver the essence in a way, that will cause the reader to act upon it.
3. The original book is not written by me. But i have used the essence in my work and have a lot of experience with it.
Since the original book is not written by me, I’ll refer strongly and give much credits to the existing book and his authors.

Number of words
If the new book has less than 20.000 words, this will be fine with me too. If strong reasons come up, why it would be useful to write more than 20.000 words, we’ll discuss it then.

Publishing
The new book will be written in English or German … and will be translated into the other language, so that it will be available in both languages.
An Option is to publish (parts of) the new book at first as blog articles on uwetecht.de.

Working Process
I’d like to ask you to clarify your process of rewriting the book. Which steps will you take? How would you like to connect the payment with those steps? What is the expected timeline?