How to manage all your photos with Lightroom. Learn the complete Lightroom workflow in this series of free video tutorials.
Getting started in Lightroom 5. Imaging expert Julieanne Kost provides an in-depth look at essential Lightroom features in this series of video tutorials.
What's new in Lightroom 5. Learn to use the new features in Lightroom 5 with Julieanne Kost.
An overview of Lightroom - Adobe Press Lightroom Classroom in a Book. Learn the basics of the Lightroom workflow.
Learn Lightroom 5. Learn the basics from expert Lightroom trainers in this series of video tutorials.
The Lightroom Catalog, or "Where are my photos?"
An in-depth explanation of how the Lightroom catalog and file structure work. Originally recorded for the first version of Lightroom, but still valid for latest versions.
Lightroom catalog FAQ. Suggests for managing your Lightroom catalogs.
Additional resources (third-party paid courses)
Multi-Catalog Workflow with Lightroom 5 (Peter Krogh)
Lightroom video courses and blog (George Jardine)
Lightroom 5: The Fundamentals & Beyond (Laura Shoe)
Lightroom books and video training (Peachpit Press)
Photography and Lightroom training courses (Kelby Training)
Learning Adobe Photoshop Lightroom (InfiniteSkills)