You don't have to go to the library, you can also find any classroom, and no one cares about your self-study ... If you happen to have a class in this classroom, you must change to another classroom ... It would be better if you know the students of the school ... Just ask them to borrow a library card ... and then you can go in and out at will. Many students in the school don't go to the library, and their library cards are idle ... I hope it will help. ..