The University of Waikato Library.
The New Zealand Digital Library has the full text of most computer science technical reports.
A huge collection of computer science bibliographies.
Developer.com has thousands of technical reference books online, plus articles, free software, free web graphics etc.
StudyWeb offers good introductory to advanced Computer Science, AI, Lisp, and Prolog links, plus children's educational games etc.
A large list of free reference sites useful to writers (includes newspapers from around the world, dictionaries, quotation guides, maps, style guides etc.)
Telecom New Zealand online directory search.
Interested in computer history?
Collections of icons for web/program use: Anthony's Icon Library, A+ Art
Chris Crawford's book "The Art of Computer Game Design" can be read free. "Timeless and precious."