Powerpivot & Dax Formulas For Excel — Practical

: The book includes simplified chapters designed to help users build sophisticated pivot tables in just a few minutes. Essential DAX Formulas for Power Users

In his book author Art Tennick provides a comprehensive guide for extracting actionable insights from massive corporate datasets. This "hands-on" resource is particularly noted for: Practical PowerPivot & DAX Formulas for Excel

DATEADD : Used for time intelligence, such as calculating "Year-Over-Year" growth by shifting dates. : The book includes simplified chapters designed to

: It contains over 250 downloadable DAX formulas that cover everything from basic filtering to complex statistical and time-intelligence functions. : It contains over 250 downloadable DAX formulas

CALCULATE : The most powerful function, used to modify the filter context of a calculation.

SUMX : An "iterator" function that performs a calculation row-by-row before summing the results.

If you're looking for the "power" in PowerPivot, these common DAX functions highlighted by expert resources like Microsoft Support and Analytics Vidhya are essential: