Q. how to relaunch on line library site
Can you clarify your question a bit please? Are you running into issues accessing the Online Library? If the Online Library has been open for too long without activity, the site will time out. If you run into that issue, I would recommend closing the tab or window the Online Library is open in, logging out of your Campus Common, logging back into your Campus Common, and then selecting My Academics --> Online Library --> Launch Library. The Online Library should then open without issue.
Please let us know if you have any other questions!