As it says on the "Learn More" page, you can watch videos and listen to music ad-free. I am currently on the free trial, but I won't be using it once it ends, because I don't have the money. Sounds like YouTube Red, except it's actually available in my country. You also can gain access to a bunch of original series created by other YouTubers. I hope you got the gist of it, because I'm not usually good at explaining stuff. You should just learn more about it yourself.