This course focuses on the cloud-focused version of Lightroom, not Lightroom Classic. With this version of Lightroom you don’t need a catalog and you can now manage photos both locally and in the cloud.
The lessons in this course provide lessons to help you better understand and configure Lightroom, organize your photos, make full use of the optimization features, and learn how you can share photos from Lightroom. You can get more details on the GreyLearning website here:
The “Mastering Adobe Lightroom” course is included at no additional charge in the GreyLearning Ultimate Bundle (http://timgrey.me/atg99bundle), but is also available as a standalone course at the link above.