Library databases are generally not free and open accessible to the general public. They are most often available to library members, or anyone who is a member of a university or research center (students, instructors, researchers, etc).
There are two options to directly access a specific database:
The advantages of starting research directly within a database include a more direct, focused, and relevant working environment.
Each database will have its own interface to display its specificities and various filters to refine searches, but once you understand how databases function, they usually all contain many common elements to narrow down results, including:
If you prefer not to register to get the full extent of the library's subscription to Artstor, you can access a reduced amount of images using the public version of Artstor where images can be downloaded without prior registration.