•Back up your documents. It doesn’t matter if you use a USB drive, a CD, a ZIP disk, a floppy disk, or even another computer. Important data should be backed up on something, so if your computer crashes you won’t loose it.
•Make sure you have a firewall, especially on wireless connections at public wireless hotspots, and other connections in public places.
•Do not open email attachments unless you know the sender is and you know what the file is. Email attachments are one of the most common ways in which viruses spread.
•Use an email spam filter which filters spam email into a designated spam folder. Gmail does this automatically. Unless you recognize the sender of an email which is sent to the spam folder, do not open any emails in the spam folder. Delete them without opening them first.