Great for brief introductions to topics when you're first starting your research, as well as definitions of concepts and theories you see mentioned in in-depth scholarship. Often provide a starting bibliography, and a recent, relevant literature review can be a huge time saver for identifying key research.
Try a multidiciplinary search from the library home page main search box, and then use the left-hand filter menu on the results screen to narrow to FORMAT: "Reference Entries." This tactic also works for surveying scholarly articles from different disciplinary perspectives. Overwhelmed by results? Try limiting to publication date in the last 3-5 years, sorted by relevance.
Check for additional resources in a related subject research guide