Various tools for writers operated by the ReAnimus Press crew:

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

General:

Specific to Smashwords:

Staying Alive - A Writer
The Issue at Hand, by James Blish (as William Atheling, Jr.)
How To Improve Your Speculative Fiction Openings, by Robert QualkinbushAnthopology 101: Reflections, Inspections and Dissections of SF Anthologies, by Bud WebsterOf Worlds Beyond, by Lloyd Arthur Eshbach, ed.Space Travel - A Science Fiction WriterIn Search of Wonder, by Damon KnightThe Craft of Writing Science Fiction that Sells, by Ben BovaA Reasonable World, by Damon KnightCommencement, by Roby JamesThe Lemon Eaters, by Jerry SohlManhattan Transfer, by John E. StithCompanion to the Cosmos, by John GribbinReunion on Neverend, by John E. Stith