Very useful.
As an author of non-fiction, I found this very useful. However, this is not to say that Ms. Rand is an expert in general on writing non-fiction, b/c she had no experience writing from scientific evidence. Issue like statistical tables, validation of questionnaire items & scales, photos of archeological finds, etc are for others to discuss. In her day, there was no writing for e-book publishing, which has complications for most types of non-fiction. So I'm looking for other audio books on non-fiction also. I rated this sub-max but close to max on "story" -- there is no story, but it seems unfair to penalize the author for not covering every skill in non-fiction writing, and "story" is the closest this rating system comes to comprehensiveness & understandability of content.

