When I started using Microsoft Excel, my spreadsheets were a mess, and I wasted hours trying to make them look professional.

You know the routine: you click the little arrow on the column header, the massive dropdown menu appears, and suddenly you are looking at a long list of items, trying to figure out if you have already ...

Learn how Excel functions can act as data using LAMBDA, LET, and BYROW, so you reuse logic and cut formula edits.