A GEDCOM is a computer file that is in plain text. GEDCOM is short for GEenealogical Data COMmunication.
How do I get a GEDCOM?
You can create a GEDCOM from most genealogy software, and most genealogy software can import a GEDCOM.
Why do I want to create a GEDCOM?
The reason you would want to create a GEDCOM is to share genealogical data with another person or site that doesn't use the same software.
How do I create a GEDCOM from Legacy 8.0?
To create a GEDCOM from Legacy 8.0 you click on "File" in top toolbar, then pick "Export" and you can then pick the details of how you want the GEDCOM generated.
How do I create a GEDCOM from my family tree at Ancestry.com?
From your family tree on any page, you click on "Tree pages"
What can I do with a GEDCOM?
You can send the GEDCOM to people you want to send your family too.
If you have tested your autosomal DNA you can upload your GEDCOM to gedmatch.com.