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Data Modeling in Excel using Power Pivot
Learn how Power Pivot simplifies data analysis. Topics include: multiple tables and relationships, editable linked tables, DAX formulas, custom calendars, and measure concepts, with a focus on demons...
This site has a lot of resources https://powerpivotpro.com/
Also take a look at this course. https://www.edx.org/xseries/microsoft-excel-data-analyst
Also take a look at this course. https://www.edx.org/xseries/microsoft-excel-data-analyst
I'd add sqlbi.com, in particular https://www.sqlbi.com/p/introducing-dax-video-course/. In general google/bing Alberto Ferrari, Marco Russo, Rob Collie (sorry for not mentioned more) - you'll find a lot of resources and great books on Amazon.