For download a file .pdf, please open this link:
filename: "How To Create A Simple Pivot Table with Excel.pdf"
https://docs.google.com/open?id=0B6a5vK3IVP_0d3NzaTRTSEsxU1E
filename: "Example of Grouping in Pivot Table.pdf"
https://docs.google.com/open?id=0B6a5vK3IVP_0MFM2SjJ3Rm5GN28
Example of excel:
filename: "Pivot_Table_Example_1.xls"
https://docs.google.com/open?id=0B6a5vK3IVP_0WjQyRFItb1U1b2s
filename: "Pivot_Table_Example_All.xls"
https://docs.google.com/open?id=0B6a5vK3IVP_0UFlCWGh1WEd5bVE