Various tools for writers operated by the ReAnimus Press crew:

More Issues at Hand, by James Blish (as William Atheling, Jr.)
In Search of Wonder, by Damon Knight

General:

Specific to Smashwords:

How To Improve Your Speculative Fiction Openings, by Robert Qualkinbush
Anthopology 101: Reflections, Inspections and Dissections of SF Anthologies, by Bud Webster
Of Worlds Beyond, by Lloyd Arthur Eshbach, ed.The Craft of Writing Science Fiction that Sells, by Ben BovaStaying Alive - A WriterHaving Relationships With Characters on the Road to Great Fiction, by Andrew BurtThe Issue at Hand, by James Blish (as William Atheling, Jr.)Space Travel - A Science Fiction WriterMaelstrom, by Roby JamesGuardians of the Desert, by Leona WisokerWoman Without a Shadow, by Karen HaberNo Time Like Tomorrow, by Ted WhiteThe Box: An Oral History of Television, 1920-1961, by Jeff KisseloffThe Star Conquerors (Standard Edition), by Ben Bova