So while I have delivered a number of training courses in Power BI, both custom and ones developed by Microsoft I must say, getting used to how Power BI works is the biggest headache there is. I know from bitter experience how much people can struggle with concepts that are central to Power BI when getting started I would therefore 100% recommend of course subscribing to my channel but I would also advise using other videos and channels.
Microsoft has some great content available free on their youtube channel. As the content is often created by members of the product team they will often be the first place where new features are announced and revealed. So don’t just subscribe to me, but also subscribe to them.