You write with your computer, you might visit writer workshops or messageboards online, maybe you pay bills online. Heck, a lot of your life is invested in what your computer can do for you. So it would be wise for you to ask yourself, what can I do for it? Keeping it healthy ought to be your number one computer/internet priority.
There are several ways to do that. One is to be informed. Another is to install an excellent virus protection program and probably a firewall couldn't hurt. Pop-up blockers also come in handy although they do need to be disabled to conduct business on most secure sites (which are excessively fond of pop-ups).
If you have your own ideas and suggestions on how to stay safe and sensible online, please do leave your comments.