In the previous chapter, we saw some of the ways in which you can find and load data into Power BI Desktop Query, and from there into the Power BI Desktop data model. Inevitably, this is the first part of any process that you create to extract, transform, and load data. Yet it is quite definitely only a first step. Once the data is in Power BI Desktop, you need to know how to adapt it to suit your requirements in a multitude of ways. This is because not all data is ready to be used immediately. Quite often, you have to do some initial work on the data to make it more easily useable in Power BI Desktop.