Instructions:
From anywhere in the app, tap the profile icon to be taken to a user's profile.
Once in a profile, you can see if you are following them. Tap Follow to begin following and tap Unfollow to stop following.
You can also start following users while viewing their stream by tapping Follow in the top left corner of the active stream.
To stop following a user, navigate to their profile and tap Following, then tap at the bottom of the screen.
Additional Info:
Following users allows you to stay updated on their activities and streams.