Power BI Tips

https://www.daxpatterns.com/parent-child-hierarchies/  

https://www.youtube.com/watch?v=jKBfMvhU9R0  

https://www.red-gate.com/simple-talk/databases/sql-server/bi-sql-server/introduction-to-dax-for-paginated-reports/  

https://www.sqlbi.com/articles/show-previous-6-months-of-data-from-single-slicer-selection/  

https://www.daxpatterns.com/comparing-different-time-periods/  

https://www.sqlbi.com/articles/using-calculation-groups-or-many-to-many-relationships-for-time-intelligence-selection/