Using variables in DAX makes the code easier to read, faster, and easier to debug. Learn how and when to use variables, along with why they are so important in any DAX expression.
Article and download: https://sql.bi/760161?aff=yt
How to learn DAX: https://www.sqlbi.com/guides/dax/?aff=yt
The definitive guide to DAX: https://www.sqlbi.com/books/the-definitive-guide-to-dax-2nd-edition/?aff=yt