...
Access: To access Shared Shelf Beta 0.1, please go to: http://catalog.sharedshelf.demo.artstor.org/login.html. 
; Please refer to the email that ARTstor sent for your username and password.
...
You will find complete beta testing instructions by clicking the link in the center of the Shared Shelf log in page that says "Give Feedback." This will open a separate tab of instructions in your browser. Please note two identical tabs of instructions may open when you click this link; if this happens just close one of the tabs. If you would like to see a pdf of the complete instructions for reference, it is available here: http://www.artstor.org/what-is-artstor/w-pdf/shared-shelf-beta-feedback.pdf. All feedback should be entered in the online feedback form.
...