Almost everything I know about the computer came about learning from my children (and a few from asking questions when I had a computer crash).
I wanted to warn you all about something that almost happened to me last night. I was doing a Google Search when an error message popped up. I've been online long enough (ten years now) that I recognized something that wasn't right.
My son taught me when this happens, never (NEVER) click on anything, even the cancel button but to turn off the computer. When I turned it back on, I had a new icon on the desktop, which I sent to the Recycle Bin and emptied it.
Another practice I learned from a repair person... run your virus scan at minimum when you turn on the computer in the morning and before turning it off at night. He suggested a mid day scan for people who are online all day.
All of this advice has (hopefully) saved my computer. When I ran the scan this morning, I had 89... yes, as in eighty-nine... Trojans/Viruses. I had run a virus scan yesterday morning with zero infections.
I was once again reminded to be careful when using any search engines and clicking on an unknown website (this one was page four or five into the search and not a familiar site). Hopefully all eighty-nine of those malicious "germs" are now placed in a part of my computer where they can have no affect.
By the way, the program I use is free!
ADDED NOTE: I use Clamwin!