Use relevant keywords then use filters on left. For immediately available electronic results, use the filter on the left: "Available Online at Kennedy" and then filter for ebooks. For print items, sign into OneSearch to see your request options. Delivery times for tangible items retrievable from campus storage will be faster than items requested from other libraries (ILL.)
Some books you identify in OneSearch may be available for free digital lending and reading online. This will be faster than requesting it. It only takes a moment to make an Internet Archive account and "borrow" these books. You can also search here for things not in OneSearch.
Search Ebook Central, SpringerLink, JSTOR, Project Muse and Wiley for ebooks, chapters and articles