Websites
Society for Creative Anachronism Corporate website
Royal City of Eoforwic group
Swords of Eoforwic group
Barony of Septentria page
Barony of Septentria group
Kingdom of Ealdormere page
Their Royal Majesties Ealdormere page
Kingdom of Ealdormere – Official group
Ealdormere Arts & Sciences group
Armed Might of Ealdormere group
Unofficial Ealdormere Ride Share and Crash Spaces group
The Society for Creative Anachronism page
SCA Heavy Combat (unofficial) group
There are a ton more SCA groups and pages for all of the hundreds of interests within the SCA. Feel free to do a Facebook search and find more.
Discord
Kingdom of Ealdormere Official
Kingdom Community Unofficial
Society for Creative Anachronism [official]
The Known World [unofficial]
Love for All – SCA (Unofficial)