GED stands for GEDCOM, do an internet search for details. I keep my research materials, sources, certificates grouped in Maternal and Paternal files then family surnames in each category, then by generations.
The most delicate materials can be photographed by most cell phones made today or a quality digital camera instead of handling them and exposing them to a bright scan light.
Use acid free paper protectors/pockets for certificates and photos unless you want to frame them.
A local LDS Family History Center can be a source of help also as well as their website familysearch.org .