If you want to browse for books on the 4th floor of the library, check out this list of where you can find the subject of your choice.
When you find a book in the catalog that you want to get your hands on, note:
Once you have that information in hand, find the book on the shelf.
If you haven't found a book in an academic library before, take a look at this guide to the Library of Congress Classification System (what we use to organize our books) before venturing upstairs. Be patient with yourself-- it's a little bit tricky to use this system at first if you're not used to it.
Still not finding the book? Ask one of the reference librarians.
Expand your search to include all of the libraries in SMSU's system.
Under the book search box, you'll see that you can change the libraries you search from "Southwest Minnesota State University" to "All MnPALS Libraries." Change it and run your search again.
When you find a book that you want, you don't even have to run up to 4th to find it-- just click on the "Request Item" link and follow the prompts. You can log in with your StarID and password. Once your request is submitted, you can expect to get an email notifying you that you can pick it up within the next 3-7 business days.
For more information, check out the ILL website.
Next, try searching MnLink. This catalog searches every library in Minnesota, including the University of Minnesota. Try this search after you try "Search all MNPals libraries" in OneSearch, and before you search WorldCat.