Various tools for writers operated by the ReAnimus Press crew:

Anthopology 101: Reflections, Inspections and Dissections of SF Anthologies, by Bud Webster
Staying Alive - A Writer

General:

Specific to Smashwords:

Having Relationships With Characters on the Road to Great Fiction, by Andrew Burt
Space Travel - A Science Fiction Writer
How To Improve Your Speculative Fiction Openings, by Robert QualkinbushMore Issues at Hand, by James Blish (as William Atheling, Jr.)The Issue at Hand, by James Blish (as William Atheling, Jr.)Of Worlds Beyond, by Lloyd Arthur Eshbach, ed.The Craft of Writing Science Fiction that Sells, by Ben BovaIn Search of Wonder, by Damon KnightIn Search of the Double Helix, by John GribbinJewels of the Dragon, by Allen L. WoldA Song of Awakening, by Roby JamesDeep Quarry, by John E. StithTrouble on Project Ceres, by Ted WhiteSense of Wonder, by Gardner Dozois