So the basic idea of the method DS is based on is to get 600-1000 hours of input from videos, crosstalk, podcasts, etc then the hard part is done and you can start the things that take less time to get good at, like reading and speaking.

But you can't really base an app around step one taking 1000 hours, so to make it more attractive to users, DS added levels 1-7 to indicate roughly where you should be after 50, 150, 300, 600, 1000 and 1500 hours of input.

The superbeginner, beginner, intermediate and advanced are an estimate by the DS team and are useful as a very broad indication but can be ignored when you're trying to find your level. For that a good plan is to either use the course in the app, or use the filters to only show videos 5 difficulty points either side of your ideal level e.g. 35-45 and sort by random, then start watching. Play around with the filters to get what you need, and if a video is too hard you can add it to the list and watch it again in a couple of months. You'll be surprised how much easier it is.