Followers... can you explain please?

Followers' and 'following' is exactly what it sounds like and means that you can follow other users you like and the same vice versa. The benefit of this is that you will be the first to know when someone you're following has uploaded a new item via a notification.

If you've found an item you are interested in and have decided you want to stalk a user (joking) to ensure you're notified when they have uploaded new items.

To do this press on the item you are interested in and then click the '+' sign or the 'follow' button (if on the web). This will turn green once you are following them.

To unfollow them you just click the green box again.