Information about GEDCOM files - Standards

Heiner Eichmann’s GEDCOM 5.5 Sample Page

The GEDCOM Standard Release 5.5

XML for Genealogists

Articles

GEDCOM 101 - Jan McClintock - LeisterPro.com (Reunion for the Mac)

GEDCOM Explained - Dick Eastman (Eastman’s Online Genealogy Newsletter)

Introduction to GEDCOM - 2001, Nigel Batty-Smith (Excellent guide)

GEDCOM Decoded - Rick Crume - Article at Family Tree Magazine

Sharing Genealogy Files - Sep, 1998, Gary B. Hoffman

Is GEDCOM Dead?

Help, Tips, etc.
Tips and Techniques (users.sisna.com/mhobart/Generations/tips/tip38.html) - Tips and Techniques on working with GEDCOM problems.

GEDCOM 5.5 Torture Test Files (geditcom.com) - Use these GEDCOM 5.5 files to test your applications’ abilities to import and export GEDCOM 5.5 files.