A Power Query tip for you

Power Query Functions Overview

The Power Query M function reference includes articles for each of the over 700 functions. These reference articles are auto-generated from in-product help.

https://learn.microsoft.com/en-us/powerquery-m/power-query-m-function-reference

Power Query Custom Functions

If you're familiar with using Excel functions (and of course you should be) then you'll know that a function typically takes some input and gives you an output.

https://www.myonlinetraininghub.com/power-query-custom-functions

How to Uncover the Hidden Power Query Function List!

Hidden inside both Excel and Power BI is a secret Power Query function list that you can bring up while working in the Power Query editor window…that’s if you know the magic word.

https://www.youtube.com/watch?v=5a0dlTAEr2E

Parameters and Functions in Power BI / Power Query–Custom Functions

Power Query has over 600 native functions and the Power Query team keeps adding more and more.

I wouldn’t recommend memorizing them, but you do need to understand the concept of parameters and arguments in order to understand what functions are.

https://www.thepoweruser.com/2019/02/19/parameters-and-functions-in-power-bi-power-query-custom-functions/

More about Power BI

https://www.hubsite365.com/en-de/news?id=b924b3d9-6e45-ed11-bba2-6045bd8f953f&topic=47b49196-e1e1-ec11-bb3c-000d3a47c0cc