If you have a citation to an article, type the journal title into the library catalog to find out what years of the journal are available at PSU.
For help decoding journal abbreviations check out the CASSI Journal Abbreviations search tool.
Most books in Education will be located in the L section on the Lower Level. It's a large section, however, so Ask a Librarian to help you find a specific resource.
If you need a book or article that PSU does not have you can request it through Interlibrary Loan. (The link can also be found at the bottom of the library website.)
InterLibrary Loan is free to all PSU students, faculty, and staff. For books, it usually takes about a week to arrive. Articles usually arrive electronically within 2-3 days.