Making a Living Off Youtube
Youtube is a video sharing platform which involves content creators (Youtubers) making videos that the public (viewers) can watch on this website for free. Some videos get a ton of views which can result in the creator of that video being payed a decent amount of money from Youtube depending on how many views they are getting. When these videos get a lot of views, Youtubers have the option to play advertisements within their videos which ad companies pay per ad click or ad view.
The purpose of this system is to reward Youtubers for creating content that the public loves to watch. Thus, this pretty much their full-time job and this is the system that Youtube uses to pay them.