The Family History Library Catalog describes books, microfilms and microfiche in the Church's Family History Library in Salt Lake City. Many of these materials may be borrowed through local Family History Centers throughout the United States. There is a small fee to cover mailing costs. The Internet Index to the Pedigree Resource File lets you know if your family history is part of the Church's collection of family histories submitted by individuals via the Internet. It's also published on compact disk and may be bought from LDS Distribution Centers.
Information is organized in family groups and pedigrees printed exactly as submitted.
Errors in, errors out. But this is a source that definitely should be consulted. Nine such CDs are currently available. The Mann and Zautcke article also includes a lexicon of Internet vocabulary, which explains some of the arcane terminology of genealogy, computers and cyberspace that are relevant for folks who want to explore their family roots. This is but a small part of the territory covered by Mann and Zautcke.