I have about fifty books in my library, and many of them are really good. But the best is Dwight Swain's, Techniques of the Selling Writer. He doesn't talk about stylistic issues. Instead, He focuses on the nuts and bolts issues, of what a scene is, and must be, and, the elements that make it up. Rather than, "Do this and then that," he provides an analysis of our objectives, and the ways that can be accomplished. Things like the issues a writer must address, quickly, on entering a scene so as to provide the reader with context—and how to make the trader feel they're living the story in real-time, as the protagonist. Areas aren't deeply covered in most of the books I've looked at.
As was mentioned earlier, it's not an easy book. But then, it was written by a professor at Oklahoma University, a man who used to fill auditoriums when he went on tour with hs all day writing workshops.
And that brings me to the condensed audio files of those lectures on writing, and on character development. They're available under the title, Dwight Swain, Master Writing Teacher, and cost about $6. They're worth the price for his anecdotes on writing, and how he made people plan how to commit murder with a doorknob, in order to leave his office.
Another, more gentle introduction was written by one of Swain's Students, Debra Dixon: GMC: Goal Motivation & Conflict (available for download online and in hard copy from Deb's site). It's a warm easy read, and the only one I've seen that tells the reader why a line like, "Susan smilled when Jack came through the door," is to be avoided.
A newer book by Jack BIckham, Scene and Structure, is more likely to be found in the local library system. It parallels Swain's book, which makes sense given that they taught together.
The thing I appreciate about all three is there is none of the usual, "Here, read this chapter of my book and I'll tell you why it's brilliant."
All three focus on the basics. For the advanced student, Donald Maass has a book written from the agent's perspective that will tell you who your book is getting rejected.
Hope this helps