I hope you get as much out of these as I did.

The titles in RED are SF specific, those in BLUE cover all writing.
 
Creating Short Fiction---Damon Knight
Well written and informative.

Characters and Viewpoint--Orson Scott Card
Elements of Fiction Writing Series Complex but worth it.

Building Fiction--Jesse Kercheval
Humorous, snappy, and well done.

On Writing Science Fiction---Former Editors of Isaac Asomov's SF Mag.
Excellent book, if a bit dated.

Steering the Craft---Ursula K. LeGuin
Working my way through this one slowly. For singles or groups, with some great exercises. She's smooth as glass.

Bird by Bird---Anne Lamott
A ride through both the heaven and hell of writing by a remarkable writer. It's funny and sad and inspirational.

Scene And Structure---Jack Bickham
Elements of Fiction Writing series.

Plot---Ansen Dibell
Elements of Fiction Writing Series