Pivot tables make it easy to process and summarize large data sets in seconds. Check out the video below for a look at how pivot tables work in Google spreadsheets:
The pivot table allows data from one workbook to be summarized in another, saving huge amounts of time and brainpower. This function been available on Excel since 1997 but has been only available to Docs users to this point through the Panorama add-on.
Great news! If you want to learn more about Pivot Tables, this is a little start