Various tools for writers operated by the ReAnimus Press crew:

Anthopology 101: Reflections, Inspections and Dissections of SF Anthologies, by Bud Webster
Staying Alive - A Writer

General:

Specific to Smashwords:

In Search of Wonder, by Damon Knight
More Issues at Hand, by James Blish (as William Atheling, Jr.)
How To Improve Your Speculative Fiction Openings, by Robert QualkinbushThe Craft of Writing Science Fiction that Sells, by Ben BovaSpace Travel - A Science Fiction WriterHaving Relationships With Characters on the Road to Great Fiction, by Andrew BurtThe Issue at Hand, by James Blish (as William Atheling, Jr.)Of Worlds Beyond, by Lloyd Arthur Eshbach, ed.The Sigil Trilogy (Omnibus vol.1-3), by Henry GeeSiege of Stars: Book One of The Sigil Trilogy, by Henry Gee13 After Midnight, by Jaime Martinez TolentinoPassing Through the Flame, by Norman SpinradThe Anomaly, by Jerry SohlOne Against Herculum, by Jerry Sohl