From the MU Libraries homepage, you will see several search options on the library homepage. The first one is labeled Summon. Treat this like you would use Google: enter your search terms, and peruse the results until you find the most useful and relevant things to explore. Summon allows you to find results in print or online, and these results can be filtered to preferences such as scholarly, peer-reviewed, content type, publication date, discipline, and subject terms.
The Summon Advanced Search on the library homepage allows you to select from many different options to narrow / refine your search results.