This article concerns https://hbr.org/my-library/topics
Through topic feeds, My Library helps users to see new content being published in key topics of interest. Instead of having to search the site and worry about missing something, the topic feeds do the work for you. To follow a topic, click on the person icon in the upper right and select Topic Feeds.
Click Follow This for all topics you want to see new content being published.
Once you're following a topic, it will appear in the left menu under Topic Feeds.
Click on it to see the items that were recently published on this topic.