Hey Patricia, welcome to the BleepingComputer community. This is one of the premier forums where highly skilled people help remove infection from people's computer.
You can find so much information and friendly people on this site (forum) that you would never get virus infecting your system
You have shown interest in learning how to defend against malware and viruses. Like with other bad things, the best defense is knowledge. I suggest that you start by reading these two ebooks :http://www.sophos.com/sophos/docs/eng/sophos-a-to-z.pdf
(If you find it boring then start from page 84)http://www.sophos.com/sophos/docs/eng/comviru/viru_ben.pdf
(not necessary but interesting for beginners)
If you have any virus related queries then you can post them to one of the appropriate sub-forums under Security
I hope you enjoy BC community