This is a quickie post. One book (among several) that I would recommend for authors is Robert McKee's Story: Substance, Structure, Style and the Principles of Screenwriting. Find it at Amazon here: http://www.amazon.com/Story-Substance-Structure-Principles-Screenwriting/dp/0060391685/ref=sr_1_1?ie=UTF8&qid=1317385540&sr=8-1.
I know, I know. "Screenwriting" in the title. Still, I maintain it is great for authors. If you've ever seen a screenplay, it notes "Stage Left" or "forest" or "bedroom"--very minute snippets of description.
And if you've ever done NaNoMo (National Novel Writing Month in November, "thirty days and nights of literary abandon"), then you should know about getting the basics down--the "substance"--which you can plump up with emotions and details and description (of people and of places) later.
More recommended reads coming in future posts . . . .