This document is a tutorial about using the advanced filter feature in Excel. It explains that the advanced filter allows for complex filtering criteria using "And" criteria to filter for multiple criteria, "Or" criteria to filter for rows that meet either of multiple criteria, and formulas as criteria. It provides examples of setting up criteria ranges and using the advanced filter to display sales data that meets these complex criteria, such as sales in the USA in the 4th quarter or in the UK in the 1st quarter, or sales in the USA in the 4th quarter over $10,000 or in the UK in the 1st quarter.