This document provides tips for protecting a computer. It discusses placing the computer in a safe location away from moisture, dust, and shocks. It recommends using a surge protector and cleaning out dust regularly. The document also recommends backing up data, using antivirus software, keeping the operating system updated, and enabling firewalls to protect against viruses, hackers, spam and theft. Physical security measures like locking doors and using security cables for laptops are also suggested.