You may find the peace and quiet you need to study just sitting in a chair in the main library reading room or at a table if you need room for your papers, laptop, etc. (Another perk many libraries offer – free wifi!) If you would like to study with a group, however, and you do not wish to be disturbed ask a librarian about using one of the study rooms most libraries have set aside for just that purpose. You may have to reserve such a room in advance, and you will probably have to adhere to certain rules (no food, no loud music, etc.), but if you have a legitimate need to study with a group, your public library will be only too happy to accommodate you.