Personal Broadband Services: DSL and ATM book offers a description of the incorporation of these services into the home. Chapters include: The Problems with the Existing Network, which discusses analog modems and "what's wrong with ISDN"; Building the new Network; Taming Copper: DSL. The book includes other chapters as well as a glossary and index to figures.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies.
You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived.
So if you can't attend live, attend at your convenience.