Merge PDF Files

The other day, a user had a question about how to combine multiple PDFs into one PDF file on a Mac.  There are multiple ways to do this, but one simple way is using Preview.  First, open one of the files in Preview.  Select the icon circled below in order to view the sidebar.  

You can then drag the other PDF files into this sidebar area to combine the documents together.  Once all documents are combined, you can save the file under a new name.

On a Windows, this task can be accomplished using Adobe Acrobat.  Open one of the files, and select "Create" in the top left corner.  In the drop-down menu that opens, select the option "Merge Files into a Single PDF."  This opens a window that allows you to browse through the documents on the computer and select which documents you want to merge.