Various tools for writers operated by the ReAnimus Press crew:

Space Travel - A Science Fiction Writer
Of Worlds Beyond, by Lloyd Arthur Eshbach, ed.

General:

Specific to Smashwords:

The Issue at Hand, by James Blish (as William Atheling, Jr.)
The Craft of Writing Science Fiction that Sells, by Ben Bova
Staying Alive - A WriterHow To Improve Your Speculative Fiction Openings, by Robert QualkinbushMore Issues at Hand, by James Blish (as William Atheling, Jr.)Having Relationships With Characters on the Road to Great Fiction, by Andrew BurtAnthopology 101: Reflections, Inspections and Dissections of SF Anthologies, by Bud WebsterIn Search of Wonder, by Damon KnightBlowdry, by Jerry SohlTimeshare: Second Time Around, by Joshua DannThe Children of Hamelin, by Norman SpinradColony, by Ben BovaPoint Ultimate, by Jerry SohlCinnabar, by Edward Bryant