The fastest and easiest way to watch/listen to your favourite YouTube videos and keep them stored as part of Chrome.
This is what can be done straight from the Yost menu regardless of which chrome window/tab you are on. As long as you are on chrome, it can do all these things:
It can remember a YouTube video you're watching at the click of a button. It can play those videos one after the other automatically. It can allow you to browse through the list of "remembered" videos and jump to a chosen video. It can shuffle the playing order of the videos. It can skip to the next video or return to the previous one. It can loop the currently playing video if you want to watch/listen on repeat. It can allow you to manually edit the list of videos that it has "remembered" and add or delete some of them.
It may sound a bit confusing, but try it out and see if it is something that you would like to use.
*If you change your playlist, save it, and close the tab, the changes are not reversible!*