There are three main ways to find the articles you need:
(Use this method if you need to find your own articles for an assignment).
(Use this method if you already have a reading list with the details of an article, e.g. author, article title and Journal title).
(Use this method to find open access scholarly articles as well as articles in some Ara databases).
Start here for definitions of key terms and background information.
Google Scholar is a good place to look if you can be specific about what you need.