This is just a very simple information to prevent Viruses coming into your system. Well, my friends and acquaintances always ask me how come my PC don't get virused even though I don't have any Anti-Virus software installed, I'm always connected to the NET, and always plugging USB storage devices to my PC. They also always ask why I don't install Anti-Virus software.
First, let me tell you the reason why I don't have Anti-Virus software. The reason is my PC is slow. Yeah, it's just a Sempron 2400+ with a 256mb memory. I can't afford to install softwares that takes too much system resource as you can see so my alternative is know how to prevent viruses from getting in without having an Anti-Virus software and believe me, people complain to me about slow PC every time and my answer is always there's a virus, malware, adware, spyware, you're Anti-Virus is making your system slow... yeah, I also blame startup programs that are unneccesary. Anyway, let's move to the next topic which knowing how to prevent viruses from coming in.