For Beginners to start

Hi Nayan2013 

If I were teaching report development the way it's typically done from scratch, I'd begin with data transformation and preparation in Power Query (if data isn't in the proper shape yet or  there are rows and columns that aren't needed or don't exist at the source), followed by data modelling (building relationships), then creating visuals, and finally writing DAX measures. That sequence provides a solid foundation and is generally easier to follow when learning the basics.

That said, real-world report development is rarely that linear. In practice, you'll often find yourself moving back and forth between these areas. For example, building a visual might reveal that you need a new DAX measure, which then uncovers the need to adjust your data model or make additional transformations in Power Query. Developing Power BI reports is usually an iterative process rather than a strict step-by-step workflow.