A short course on writing technical reports  http://www.technical-writing-course.com/

About.Com - Technical Writing http://www.gary-conroy.com/

Good Documents - How to Write for the Intranet - "a web-site that discusses how to create good business documents in the linked on-screen environment of Intranets and the Internet" http://www.gooddocuments.com/homepage/homepage.htm

Online Technical Writing: Online Textbook Contents - by Dr. David McMurray - Austin Community College - includes many examples and applications of technical writing
http://www.io.com/~hcexres/tcm1603/acchtml/acctoc.html

Society for Technical Communication - STC
http://http://www.stc.org/.

Technical Writing - by Dr. Ronald B. Stander
http://www.rbs0.com/tw.htm

What Is Technical Writing? - by Mary Anne Donovan - About.Com - Writer Online
http://www.writerswrite.com/technical/  

Writing Revisable manuals - A Guidebook for Business and Government - by Duncan Kent & Associates Ltd. - A complete online book
http://www.techcommunicators.com/dkmanual/htframe.html