OmniFile Full Text Mega is a multi-subject general database. You can use it to find academic journal articles (including peer-reviewed), magazine articles, and newspaper articles. It also has some books, videos, audio files, and images. It covers a wide range of topics, and is a good place to start your search.
The library has several subject-specific databases provided by EBSCO. The information provided on this page, as well as the video, is applicable to most of these databases.