The most excellent UK Security Advisor site has a very good security guide available for free download (.pdf). The guide is divided into three chapters:
- Windows Security:a sixty minute journey to a safer Windows experience.
- Internet Security: stay safe from bad stuff on the Internets.
- Hardware Security: “how to keep your hardware safe from sticky fingers.”
Some really good stuff here, and it’s all free after a quick registration. FYI, the guide is all the way at the bottom of the linked page, and you can download your pick from the three chapters available.