There are four types of communities on Reddit:
Public Communities
Anyone with a Reddit account can view, comment, and post in a public community.
Restricted Communities
Anyone can view and comment in restricted communities, but only approved members of the community that are approved by moderators can post. It’s up to mods to add and remove approved members
Private Communities
Only members of the community that are approved by moderators can view and participate in private communities. It’s up to mods to add and remove approved members.
Premium-Only Communities
Only Reddit Premium members can create, view, and participate in Premium-only communities. Also, a community can only be set as Premium-only at the time of creation and anyone can moderate a Premium-only community, even if they’re not a Reddit Premium member.
Si tienes alguna duda que no aparezca en la sección de preguntas frecuentes, echa un vistazo a r/help. Es posible que otro usuario ya haya hecho la misma pregunta. De lo contrario, puedes preguntar tú y obtener ayuda de un administrador de Reddit o de uno de tus compañeros redditors.