Check out the video below for a quick tutorial on how to turn your topic into keywords, including the importance of synonyms.
Keyword Generator - If you know your topic and are stuck on how to break it into keywords and create search strings from those keywords, try this interactive keyword generator. (See sample below.)
Identifying Keywords - If you are stuck on where to find keywords, how to pick the right synonyms, and how many keywords you need for an effective search, remember to focus on the most important nouns only, and check this research guide for more helpful tips and links.
Check out the video below for a quick explanation of how to go from topic to keywords to search string.