Person sitting on a chair, watching a screen monitor.

Monitor Watching Man 

A person sitting down, with his computer and headphones, participating in an online class, watching a movie or listening to music.

Person With Laptop And Headphones

A person sitting with knees up watching a handheld device while wearing headphones.  

A "watch or follow" illustration of a front-facing opened book with an "add friend" icon and a play button.

A busy and overworked manager or employee surrounded by charts, graphs, and notifications.