Basic question about properly planning reports and Data Refresh - how it is done in the industry

Hi arunbyc , thank you for reaching out to the Microsoft Fabric Community Forum.

There are several courses in youtube one can learn from. Below are the links to the videos and Microsoft Learn Documentation that i recommend. :
You can find Microsoft doucumentation on almost everything PowerBI here:
 1. https://learn.microsoft.com/en-us/power-bi/?wt.mc_id=powerbi_inproduct_settings
 2. https://learn.microsoft.com/en-us/training/powerplatform/power-bi

For Individual Courses try these:
1. Learn Power BI: Tutorial for Beginners -Full Cours... - Microsoft Fabric Community
2. https://www.youtube.com/watch?v=cyWVzAQF9YU
3. https://www.youtube.com/watch?v=xDgyDXyu6FQ
4. https://www.youtube.com/watch?v=ENZm_7jWU4Q
5. https://www.youtube.com/watch?v=MII8NIF98RM
6. https://learn.microsoft.com/en-us/power-bi/connect-data/refresh-data
7. https://learn.microsoft.com/en-us/power-bi/connect-data/service-gateway-onprem
8. https://learn.microsoft.com/en-us/data-integration/gateway/service-gateway-manage
9. https://learn.microsoft.com/en-us/data-integration/gateway/service-gateway-install
10. https://learn.microsoft.com/en-us/power-bi/connect-data/desktop-directquery-about

If this helps, please consider marking it 'Accept as Solution' so others with similar queries may find it more easily. If not, please share the details.
Thank you.