I'm glad you liked them.

Here's something equally helpful: http://www.google.com/

After that try: http://buyaclue.com/

You come to a security site and ask where you can find information about virii. What do you think is dealt with here? There are tutorials about virii, virii removal, trojans, trojan removal, rootkits, worms, spyware, adaware, malware, and how to get rid of all of them. Most of those 3000+ threads I linked for you contain additional links to sites that would have answered your questions.

I'm not sure how you find nihil's suggestion not helpful. If you can't learn about malware from the companies that make a living fighting them, then I'm not sure what to say.

When you ask broad questions, you get broad answers. When the answers start getting stupid, then it's time to reconsider your questions.