In general, Search Articles, Books, and More (above) is the best place to start when doing research. It contains journal articles, books, eBooks, journal and newpaper articles. However, it doesn't actually have everything. Here are some databases you may wish to try as well:
Includes leading international peer-reviewed journals, including high-impact research titles published on behalf of over 245 scholarly and professional societies. Covers subject areas including business, humanities, social sciences, psychology, science & technology and medicine. 
Full text, peer-reviewed journal articles in the fields of life sciences, physical sciences, social and behavioural sciences.
Search the combined Canadian Business and Current Affairs databases: CBCA Business, CBCA Current Events, CBCA Education, and CBCA Reference.
Full text access to major Canadian newspapers, including the Globe and Mail, the National Post, and the Toronto Star. 
Access to the Lippincott Premier Nursing Journals, a collection of 14 essential health information journals.
This e-book collection includes: Encyclopedia of Crime and Justice, Encyclopedia of Sociology, The Gale Encyclopedia of Psychology, International Dictionary of Psychoanalysis, and Psychologists and Their Theories for Students.