Hi Adela Holla,
Thank you for reaching out to us on the Microsoft Q&A forum.
You can use Power BI Desktop with your private email to complete most tasks in the Microsoft Power BI Data Analyst course. Power BI Desktop is a free tool, and you can fully test and practice tasks such as data importing, report building, and analysis on your local machine without needing a work or school email.
However, if you plan to use the Power BI Service (such as publishing and sharing reports or using Power BI Pro features), you will need a work or school email. Power BI restricts the use of personal email accounts (like Hotmail or Gmail) for these services.
For now, you can proceed with Power BI Desktop to practice the tasks from the course.
If you are still facing any issue, please let us know in the comments. We are glad to help you.
If the information is helpful, please Accept Answer so that it would be helpful to community members.
Thank you.