Friends
In your browser, press on the three line menu icon (top right hand corner) and under account, press the 'Profile' button. Beside your 'Timeline' and 'About' tabs you will see the 'Friends' option. once you click on it, you will see a list of your friends. If you would like to unfriend smeone or follow/unfollow them, you could do so here.
Followers
In your browser, press on the three line menu icon (top right hand corner) and under account, press the 'Profile' button. Beside your 'Timeline' and 'About' tabs you will see the 'Followers' option. once you click on it, you will see a list of your followers.