Inscrivez-vous ou connectez-vous pour rejoindre votre communauté professionnelle.
good question.
honestly, the answer is depended on what kind of work you are doing?
I mean, what you are doing with Excel?
In general, there is the common functions in (math, conditions, simple statistics, string, date, ...)
math: sum, power, ...
conditions: it, countif, sumif, ...
statistics: average, sdev, mean, ...
string: mid, left, right, ...
date: today, adddate, emonth, ...
it is a long list.
If you know what you want, you can find the right tool in Excel.