how to combine visualization from different reports to create one visualization.

Hi! You'll need to create a calculated measure to do this, it's difficult to say exactly what the syntax should be but simply adding the two values together might be enough. Something like: TotalSum = [Column A] + [Column B] If you put that in a 3rd table, it'll be the aggregate across all the rows in table A and B. The DAX language that you use to create these calculations is really powerful, and learning it is important if you're going to master Power BI! There's a good introduction here: https://powerbi.microsoft.com/en-us/documentation/powerbi-desktop-quickstart-learn-dax-basics/ and some great reference books as you progress: http://www.sqlbi.com/books/the-definitive-guide-to-dax/?utm_source=sqlbi&utm_medium=banner&utm_content=home&utm_campaign=daxguide HTH!