Hi, I'm Tom Blessing. I'm an expert at helping small to mid-sized companies adopt Power BI. I'm also a recovering investment banker, with deep experience applying technology to otherwise manual data problems. I have dual degrees in Finance and Technology Management from Indiana University.

Resources to help build your fundamentals: Learning Power BI? Data fundamentals are critical for this process to be easier. I've assembled a few DataCamp courses to help. I earn a small commission if you click and purchase.

Introduction to Power BI course: Master Power BI basics and learn to build impactful reports.

Exploratory Data Analysis in Power BI course: Learn about Power BI's Exploratory Data Analysis (EDA) and enhance your reports.

Introduction to SQL course: Learn how to create and query relational databases using SQL in just two hours.

Introduction to DAX course: Learn the fundamentals of Data Analysis Expressions (DAX) such as calculated columns, tables, and measures.

Database Design course: Learn to design databases in SQL to process, store, and organize data in a more efficient way.

You've laid the foundation and crafted dazzling visuals

But let's say you want to go back and check a data source.

How do you see them all in one spot? 

Just as a savvy marketer knows every traffic source to their website, you should be clued into every data source feeding your Power BI.

Here's how you get there.

• Fire up Power BI Desktop.
• Go to 'Report View': It's the chart icon located on the left side panel.

• Now, navigate to the Home tab in the ribbon and select 'Transform Data' (the dropdown, not the icon itself). 

• In the dropdown, select Data Source Settings.

• BOOM. Here are all of your connections. 

Inspect them. I've used this many many times when building a data model. 

Bonus Tip – Documentation: If you're managing a complex report with numerous data sources, consider documenting them.

Just as a content writer has an editorial calendar, having a data source map can be a lifesaver.

Write down details, update frequencies, and any quirks you've observed. Trust me, Future You will be grateful!

To Conclude:

Power BI isn't just about pretty visuals; it's about understanding the sources behind each graph and chart. 

Make sure you know where to find them.