Complete Data Validation in Excel Every Excel user must know this. Learn online course : https://www.coursepe.com/courses I have put my best to make this video of excel data validation, here i have explain what is the use of data validation in excel?, This is what i called for it Data Giri in Excel tutorial, so if you don't know what is the use of data validation in excel then you must watch this complete video, one more thing as i told you to work properly on data you need to learn Power query