Search the PSU Library catalog for books. When you find a pertinent book with a green Available at PSU Library shelves link, select it or the title link for the full record. Write down the location and call number. To locate the call number on a floor map, select the link, View Map. Check out the book at the 1st floor Circulation Desk.
Academic libraries use the Library of Congress classification system to assign call numbers for print materials. The call numbers are assigned based on a book's topic, in theory allowing you to browse the library shelves by subject. Search engines find material based on whether the search terms you've used are present. Browsing can be a way of finding material which uses different terms than the ones you've used or terms and relationships you hadn't thought of yet.
HQ12-449 Sexual life
HQ503-1064 The family. Marriage. Home
HQ1075-1075.5 Sex role
HQ1101-2030.7 Women. Feminism