The College of Arms and the wider heraldic community connect online through a variety of official and unofficial discussion groups, mailing lists, chat servers, and so on.
The SCA-HRLDS mailing list is an official resource of the College of Arms, but the various other social media platforms are unofficial, including the Knowne World Heraults Discord, various Facebook groups, and so on.
These platforms can foster and facilitate heraldic education, however they require ongoing support and moderation, and their transitory nature limits their utility as a long-term reference.