Help…what is a GEDCOM…where do i get it..and how does that help my research….im building my tree on the family tree maker and want to bring the info over to nuestros ranchos to share,,,but i rea

Help…what is a GEDCOM…where do i get it..and how does that help my research….im building my tree on the family tree maker and want to bring the info over to nuestros ranchos to share,,,but i really dont want to retype all that info..thanks in advance