Thank you for this very helpful article! I’ve been able to set up my Help Center and it’s looking great. Is there a way for an admin to receive a notification when a new post is added to the community?

Yes absolutely! If you follow the community topic, you will get a notification on posts (and comments, if you specify it). You can do this even if you are not an admin. Click the Follow button at the top of the community topic. Check out the instructions in this article