About.com's computing/technology section contains information about hardware, software, programming, and tech news. It also links to advice about how to use technology - email, internet conferencing, network security. This is a thorough site - a good first place to look for technology answers.
CNet.com - www.cnet.com / www.help.com
They bill themselves as the 'site for computers and technology' and they live up to that claim. From reviews of technology equipment to how-tos, this site offers an enormous amount of information for surfers looking for a guide to the world of computers and the internet. (Here is a link to a broad range of computer-related how-tos.)
HTML Goodies - www.htmlgoodies.com/
Offers tutorials on numerous elements of HTML for beginners up to advanced HTML programmers. Also covers more complex web page add ons like JavaScript, Cascading Style Sheets and XML.
Technology Tips for Teachers - www.essdack.org/tips/
This site offers tips from Tammy, an Instructional Technology Specialist from Kansas. She offers directions for computer activities that are divided into tools for teachers (e.g. creating hotlists and lesson plans) and tools for students (e.g. creating a database, using PowerPoint). She also provides PowerPoint versions of her technology presentations and links to other online resources. This site is great because it's so teacher-centered. It's a good resource for new ideas, as well as for specific instructions.
Webmonkey - www.webmonkey.com
The Webmonkey page might look a little cluttered, but the How-To Library is excellent. Their lessons on Authoring, Design, Multimedia, E-Business, Programming and the Backend (Databases, Apache/XSSI, Unix, Security, Networks and Protocols) are simple to follow, full of visual aids, and very complete. They offer advice as well as practical guides. This is where tech people go when they need to know how to do something.
What Is? - www.whatis.com
One of the best sites of its kind on the web. It has extensive information helpfully grouped to make it easy to find and use. The structure is akin to that of an encyclopedia. They also provide links to all sorts of helpful technology.