Various tools for writers operated by the ReAnimus Press crew:

How To Improve Your Speculative Fiction Openings, by Robert Qualkinbush
Staying Alive - A Writer

General:

Specific to Smashwords:

The Issue at Hand, by James Blish (as William Atheling, Jr.)
Of Worlds Beyond, by Lloyd Arthur Eshbach, ed.
Anthopology 101: Reflections, Inspections and Dissections of SF Anthologies, by Bud WebsterThe Craft of Writing Science Fiction that Sells, by Ben BovaMore Issues at Hand, by James Blish (as William Atheling, Jr.)Space Travel - A Science Fiction WriterHaving Relationships With Characters on the Road to Great Fiction, by Andrew BurtIn Search of Wonder, by Damon KnightThe Last Hurrah of the Golden Horde, by Norman SpinradBy The Sea, by Henry GeeThe War Minstrels, by Karen HaberPredators and Other Stories, by Edward BryantWhen Grandfather Journeys Into Winter, by Craig StreteAmerican Goliath, by Harvey Jacobs