The Storefront Reference Architecture (SFRA) demonstrates best practices for building and customizing a storefront site. You can use SFRA as a starting point for developing your own site.
The purpose of this course is to cover the new architecture implemented on Salesforce Commerce Cloud that replace the old SiteGenesis. This course will help you to migrate to SFRA easily or just to know how this new architecture works.
Here you'll find the list of topics covered by this course. Mention that some references to Trailhead (Salesforce website) will be found in this course, because some topics are fully explained there.