How to protect your computer from malware

Google has developed this new 2 minute video explaining how to protect your computer from malware. Wikipedia defines malware as

Malware, short for malicious software, consists of programming (code, scripts, active content, and other software) designed to disrupt or deny operation, gather information that leads to loss of privacy or exploitation, gain unauthorized access to system resources, and other abusive behavior.[1] The expression is a general term used by computer professionals to mean a variety of forms of hostile, intrusive, or annoying software or program code.