I have created a SharePoint 2013 team site; in the
document library I was not able to see the Followoption in the ribbon
interface as well as in the top right corner of the site.
(Click
here to view larger image)
This is because
Following Content feature was not
activated in the site level. Go to Site Settings, click on
Manage Site Features
under
Site Actions section. Activate the
Following content feature
now you can be able to see the
Follow option in the team site.
(Click
here to view larger image)