@TeamYouTube I discovered you can promote your videos watching YT Creator Academy. I designed & uploaded a video today about my channel with the intent to advertise it. When I select options it won't let me click promote, but I can with all other videos.
Good question! If you're talking about monetizing your channel by running an ad, you'd need to be part of YPP first – more info on how to get started with the application process here: https://yt.be/help/PHae : https://yt.be/help/ECX1 . Hope this helps!