A few days ago Microsoft launched a new website aimed at helping PC users stay safe online and learn more about security. I love that website is easy to navigate and the reader is presented with a wealth of information. From Safety and Security Center, you can download free Anti-virus software (if you don't already have one), read about the latest scams and how to avoid them, learn how to protect your privacy, how to keep your children protected on the net, check your password strength, learn how create a new secure password, and much more.
Microsoft Safety and Security Center is a great resource that I recommend you take the time to visit and be sure to bookmark.