A Few Scanning Tips: Overview of all aspects of scanning including hardware and software

Andy McFadden's CD-Recordable FAQ: The standard FAQ for CD-R and CD-RW. Besides general questions and answers, its major sections cover encoding, media, hardware, software and common problems. Updated monthly

Chip Directory: Numerically and functionally ordered chip lists, chip pinouts, manufacturer lists, manufacturers of controller embedding tools, electronics books, CD-ROMs and magazines

IBM Archives: IBM's own history site, with pages on many of their significant systems (see especially the "Exhibits" and "Documents" sections)

Opencores.org: Seeks to design and publish core designs under a license for hardware modelled on the Lesser General Public License (LGPL) for software

The Heatsink Guide: Thorough, covers many topics about PC cooling, with recommendations, in-depth information, FAQ, links

Tom's Hardware: Building Your Own PC: An illustrated guide to building your own computer

USB.org: Official site. Includes information, products, developers section, and press