Information Overload - More Useful Sites

Wikipedia good for almost anything technology related. Deeply helpful for decoding technology.

WebHostingTalk - One of the best web forum for discussing all aspect of web hosting. Take the reviews with a grain of salt, read the follow up replies carefully and grow a thick skin.

Safe Surfing - Protect your online presence.

A high quality web browser. The best feature of it is the vast and rich availability of plug-in to enhance functionality and protect your system against malware and other bad web behaviors. (See NoScript below)

Firefox NoScript Plug-In - The most useful tool for protecting you system while surfing the web. NoScript is a plug-in for the Firefox web browser. It automatically strips all scripts from a web site, thus protecting you from common malicious software and behaviors. It is customizable to allow site scripts on a case by case basis.

Free AVG Anti Virus Software - Simple, low resource usage anti-virus software.

Online Tools - Online utilities.

DNS Report - Check your servers DNS to see if everything is working properly and common security holes are closed. If you decided to start hacking your own zone files, you will find this site invaluable.