Most of the information you need will be found in databases. LVC's A - Z Database List tools can help you narrow your database choices. Focus your choices by subject and by the type of information you need, using the pull-downs.
Limit your database search by choosing a specific subject. Recognize, too, that sometimes your topic will straddle several subject areas (for example, gender wage gap could fall within business and also the sociology). If this occurs, you can select both subjects, since it's always best to get multiple points of views.
From the A to Z list of databases, focus your search by using the Types filter. The type filter can be invaluable; it will focus upon databases that contain peer-reviewed articles, scholarly journal articles, case law, magazine articles, books, etc. It is also possible to focus your database search by both the subject AND type!