From OneSearch on the library website choose Subject, enter guitar and select Stetson from dropdown menu, then click on search icon. The results will include both print books and eBooks.
There are several ways to retrieve journal articles on guitar topics. Using OneSearch, you can select Articles, change keyword to Subject and enter guitar, and choose Stetson from the dropdown menu to the right. Click the search. OneSearch includes multi-disciplinary databases so there will be many articles on guitar but you may find more focused information by searching Music specific databases.
Click View full text to retrieve the article.