Power BI is a robust business intelligence tool that enables users to generate dynamic interactive data visualizations, monitor data, analyze trends, and make informed decisions. To begin creating visuals, it is essential to import your data into Power BI for the modeling process. Throughout this training, Helen Wall guides you in efficiently handling, importing, and transforming your data by leveraging the inherent capabilities of Power Query. Helen demonstrates the creation of ETL frameworks and the utilization of Power Query to extract data from various sources, transform it using features such as grouping and pivoting, and ultimately load it into the Power BI model.