Do you have some book styles that you prefer(text/format/etc)? Why?

Hey guys. I’m working on my first book. I would like to use a style that is easy to view/read. What are some books and editions whose style(format, writing style) you like the most? Why do you think that is?

I’m working on something that could be called applied philosophy and neuropsychology but shooting for a conversation-style. Making the ‘ladder’ easier to climb as I go through the premises.
The book will be written as an Ebook to begin with, with physical copies being available through Lulu.com or similar.

Thank you beforehand – mad lurve for details.