Learn the difference between Excel COUNT and COUNTA, plus TEXTBEFORE and TEXTAFTER tricks, so you clean text and totals with ...

Have you ever thought of the humble SUM function as a secret weapon for advanced analytics? Most Excel users see it as a basic tool for adding numbers, but what if I told you it could do so much more?

The tilde isn't the only sign you need to understand to truly get your head around Excel's inner workings. For example, the at (@) sign returns a single row value instead of spilling an array, the ...