Following a board keeps you in the loop on its activity without having to check back manually.
Follow or unfollow
On a board, select the bell button near the search bar. When you are following, the bell stays active; select it again to unfollow.

What you get notified about
Following a board can notify you about new items uploaded, new sub-boards, custom field changes, and new comments on its assets, depending on your notification preferences.
Auto-follow
Baseline may automatically follow a board for you after you interact with it, for example by commenting or uploading. Boards you have explicitly unfollowed are not followed again.
Manage followed boards
Open your notification settings and select View boards under Followed boards to see and unfollow every board you follow.

Next steps
Fine-tune which events reach you in your notification preferences.