How do I open .zip files?

• WINDOWS USERS:
  Windows expands .zip files and folders directly. Just save the file to the Desktop or to another folder, then double-click the .zip file to expand it to that location.
  
  
• MAC USERS:
  Mac OS X versions 10.3 and higher can expand .zip files and folders directly in the Finder. Just save the file to the desktop or to another folder, then double-click the .zip file to expand it to that location.