How do I create a zip file?

From a PC:
  1. Hold the CTRL button down and select the files that you wish to place in the zip folder.
  2. After you have selected all the files, release the CTRL button.
  3. Right-click with your mouse over one of the files.
  4. A menu will appear, select Send.
  5. Select Compressed (zipped) folder. A new zip folder will be created with all selected documents/files
From a Mac:
  1. Locate the files to zip in Mac Finder (file system)
  2. Hold down the Command button and then select the files you want to zip
  3. After you have selected all the files, release the Command button
  4. Right-click with your mouse over one of the files
  5. Select Compress # Items. A new zip folder will be created with all selected files