OCC's Search Everything tool lets you search nearly all library resources from a single search box. Use this tool if you're not sure where to start or are searching outside of your area of expertise. Once you do a search, notice all the ways you can improve your search using the options on the left side of the page.
Your OCC databases are a better source for high-quality full-text information than Google Scholar. However, Scholar is easy to use and can provide a good overview of a topic.