Google Scholar is a search engine that contains exclusively academic sources (such as books and articles). It includes materials from across the disciplines so, like Omni, it can be a good place to start your research.
It's pretty popular with students and professors alike due to that familiar & powerful Google experience. But, there are a few important things to know in order to make the best use of this tool.
If you do an open web search for scholarly information, you will sometimes be asked the pay $25 (or more!) to read an journal article. Don't pay!
The library may have an electronic subscription to that journal. Copy the information (title, author, journal) and take your search to the library homepage. You can always ask us for help.