You can follow an event, topic, or page by clicking on the 'Follow Content' button.
The content you follow can be found on your 'Following' page in the dropdown list under your profile picture in the top right.
When a comment is made to content you are following, you will be notified via the notification centre. If you are not active in the platform at the time, an email notification will be sent to you. You can adjust email notifications in your settings.
We don't have a 'follow people' function which you may be used to in social networks. Our feeling is that in a community space (as opposed to a 'social network' space), following activities are done around community principles (of ideas, thoughts, discussions) rather than personal networking principles (people).