Use Boolean Logic (AND, OR, NOT) to combine search concepts.
Use journal articles to find in-depth information on a specific topic. They are usually more current than books. Articles from academic journals are often peer reviewed.
Newspaper Articles generally:
Databases let you search for articles on your topic and will tell you in which volume of which journal it's published. Some articles may be available full text within a database. Other databases just tell you where to find the article, but don't have full text available.