To follow someone:
Open the person's profile by tapping their name or picture wherever you see it.
On the person's profile, tap Follow.
Alternatively, tap , then, in the desired segment, tap Follow next to the person you want to follow.
To stop following someone:
To stop following someone, open the person's profile and tap Unfollow.
Alternatively, on the People page, you can long press the person you want to stop following, then tap Stop Following.
To view the people you are following: