ReAnimus Press - Breathing Life Into Great Books

Various tools for writers operated by the ReAnimus Press crew:

Galaxy Magazine: The Dark and the Light Years, by David L. Rosheim

Footprints on Sand, by L. Sprague de Camp and Catherine Crook de Camp

General:

Critique.org / Critters - The first writers workshop on the web. (Free.)
General Guidelines & Tips on Avoiding Scams
Fixing smart quotes in Word docs

Heinlein

More Issues at Hand, by James Blish (as William Atheling, Jr.)

The Issue at Hand, by James Blish (as William Atheling, Jr.)

Having Relationships With Characters on the Road to Great Fiction, by Andrew Burt

Staying Alive - A Writer

SF in Dimension, by Alexei and Cory Panshin

The Craft of Writing Science Fiction that Sells, by Ben Bova

How To Improve Your Speculative Fiction Openings, by Robert Qualkinbush

Anthopology 101: Reflections, Inspections and Dissections of SF Anthologies, by Bud Webster

Modern Science Fiction, by Reginald Bretnor, ed.

Space Travel - A Science Fiction Writer

Of Worlds Beyond, by Lloyd Arthur Eshbach, ed.

In Search of Wonder, by Damon Knight

Heinlein in Dimension, by Alexei Panshin