Catalogers' Learning Workshop

On the Library of Congress site is a section called Catalogers' Learning Workshop, which includes freely available cataloging and metadata training materials.

While using these materials takes some self-discipline, what a great way to learn about LCSH, LCCN, authority work, metadata and digitization and continuing resources (in all their permutations).

The list looks like this

Cataloging Skills (CCT)
Basic Creation of Name and Title Authorities
Basic Subject Cataloging Using LCSH
Fundamentals of Series Authorities
Fundamentals of Library of Congress Classification

The Digital Library Environment (Cat21)
Digital Project Planning & Management Basics
Metadata and Digital Library Development
Metadata Standards and Applications
Principles of Controlled Vocabulary and Thesaurus Design
Rules and Tools for Cataloging Internet Resources

Continuing Resources (SCCTP)
Advanced Serials Cataloging
Basic Serials Cataloging
Electronic Serials Cataloging
Integrating Resources Cataloging
Serials Holdings