Notifications alert you to activities on the site.
You can control them by going to the menu on the upper right of the page:
https://www.gayauthors.org/notifications/options/
As a general rule, when you follow content, you get notifications of that content (unless you choose otherwise).
Notifications follow the container rule:
If I follow a topic, I get notifications to new posts in that topic.
If I follow a blog, I get notifications to new posts in that blog.
If I follow a blog post, I get notifications to new comments on the blog post.
If I follow a story, I get notifications to new chapters (and chapter comments, if you set it that way)
If I follow an Author, I get notifications to new stories and chapters.