Holly Lisle's books for writers are clear, interesting, and very practical. If you haven't read any of her writing books, I'd recommend starting with Mugging the Muse, but this book is clear enough that you could certainly start with this one.
In Page Turning Scenes, she starts simply and goes into depth, so the beginner will not be lost, nor the experienced writer bored. She defines a scene, then goes into depth on how to construct them, how to connect them with transitions, how to use the various types of conflict, how to manage pacing, and how to troubleshoot scene issues.
Her definition of a scene at its most basic is both simple and practical. "You have written a scene when something important [to the story] changes." She makes the point that she isn't trying to give you the over-arching academic definition, just something you can wrap your mind around when putting story together. She gives examples and assigns exercises designed to allow her reader to make the practical advice work for their readers.
It's an outstanding book.