Whole-column references in Excel are silent performance killers, often forcing the program to manage a range of over a ...
Learn advanced filtering in Excel with a criteria area, OR and AND logic, and copy results to isolate the right rows fast.
To clean up the messy data, it needs to be loaded into the Power Query Editor.
Learn how Excel functions can act as data using LAMBDA, LET, and BYROW, so you reuse logic and cut formula edits.