Power BI is one of the famous and powerful BI and Data visualization tools in use today. Power BI has extensive interactive dashboards, and styles to meet the varying needs of organizations for generating reports and answering the most pressing and essential questions, by extracting meaningful information from disparate data sources, that may be structured or unstructured. Coming to the 2nd part of your query, “how does Power BI work”. Well, initially we start off by connecting the data sets to Power BI, and these data sets could be anything from Excel sheets to any unstructured set of data, then Power BI transforms, and cleanses them, to create reports and dashboards that even non-technical members of the company could easily understand.
If you wish to break into the BI industry with a skillset in Power BI, then check out the Power BI tutorial, and enroll in a Power BI certification course from a reputed e-learning institute like Intellipaat. Also, if you wish to get started then have a look at the following video on the Power BI certification course from domain experts.