How can I efficiently use pivot tables in Excel to analyze and summarize large sets of data?

To efficiently use pivot tables in Excel for analyzing and summarizing large datasets, start by selecting your data and inserting a PivotTable. Drag relevant fields into Rows and Values areas, specifying how you want data summarized (e.g., sums or averages). Utilize filtering and sorting options for organization, and customize the layout for better visual representation. Remember to refresh the pivot table when your source data changes. This powerful feature simplifies complex data analysis tasks, providing a dynamic and user-friendly way to gain insights from extensive datasets in Excel.