1) A pivot table is an interactive table that summarizes large amounts of data using calculation methods chosen by the user. It allows the data to be viewed from different perspectives by moving row and column headings.
2) The document provides steps to create a pivot table and pivot chart from sample sales data including product ID, name, price, quantity and total for each month and region.
3) Creating a pivot chart follows similar steps to a pivot table but in the wizard, "PivotChart Report" is selected instead of just "Pivot Table Report". Fields can then be dragged between areas to customize the summary and visualization.