Nonfiction University: Technical Writing
http://mason.gmu.edu/~jhenry/nu/technical.html

George Mason University

Abstract:

Included in this section are hypertexts composed by authors with explicit expertise in technical or scientific fields, or by technical writers who interpret technical or scientific topics for a nonspecialist audience. We include links to sites that explain the field of technical writing and its genres, along with references to aid technical writers.