Adam Saxton has a video showing how to install and configure Power BI Report Server:
In this video, I look at how to install and configure the May 2017 Preview of Power BI Report Server. Power BI Report Server has a new standalone install experience and this product allows for Power BI reports to be rendered in the web portal along with paginated reports.
This will get you started with the new version.
I was really excited about this preview until I realized that, for now, it only works for Analysis Services data sources.