I do this stuff for a living, so I thought I'd pass on some of my knowledge. These rules only apply to Windows users. Mac users are too rich to care, and Linux is immune. You do not need an antivirus scanner if you know what you're doing. I don't have one in Windows, and I have no viruses. 1. Do not click on embedded ads in websites that promise "free registry cleaner" or "speed up your internet connection" or ads that look like Windows error messages. These ads are fake, and will infect your...