Library Catalog: Use this option to search for physical items (books, print journals, DVDs, etc.), ebooks, and streaming media owned by the library.
Articles & More: Use this option to search across many databases of articles in journals, newspapers, magazines, encyclopedias, and dictionaries. This does not search all databases, however.
All OneSearch: Use this option to search both the Library Catalog and Articles & More.
Course Reserves: Use this option to search for books that have been set aside for your courses.