Various tools for writers operated by the ReAnimus Press crew:

Having Relationships With Characters on the Road to Great Fiction, by Andrew Burt
The Issue at Hand, by James Blish (as William Atheling, Jr.)

General:

Specific to Smashwords:

Space Travel - A Science Fiction Writer
Staying Alive - A Writer
How To Improve Your Speculative Fiction Openings, by Robert QualkinbushIn Search of Wonder, by Damon KnightThe Craft of Writing Science Fiction that Sells, by Ben BovaMore Issues at Hand, by James Blish (as William Atheling, Jr.)Anthopology 101: Reflections, Inspections and Dissections of SF Anthologies, by Bud WebsterOf Worlds Beyond, by Lloyd Arthur Eshbach, ed.Outside Agency (A Kieran Lenahan Mystery), by Conor DalyStar God, by Allen L. WoldThe War Minstrels, by Karen HaberCreating Short Fiction, by Damon KnightThe Haploids, by Jerry SohlAmerican Goliath, by Harvey Jacobs