Keywords are the first (and, often, most skipped) step in your research. We can talk about the same issues using completely different words; if you only identify one of those words to search, you might miss some key research! Searches for a computer vs. a Dell vs. a desktop will get you very different results, after all. There are different ways to do this, with some outlined below to help you get started.
If you have a research question already started, you can identify your keywords and come up with alternate words in a sort of list, or you could even use that topic to start a concept map and connect ideas.
Really, this planning is for your own benefit so as long as it makes sense to you, do it however you want! Just make sure you're coming up with multiple keywords and writing it down!
Identifying & Developing Keywords
Example Topic: Venetian church music exemplified by the composer Giovanni Gabrieli.
Starting keywords: Venetian Church Music ; Giovanni Gabrieli
Alt terms: (From brainstorming, a dictionary/thesaurus, a book glossary or index, etc.)
Venetian Church Music, or...
Giovanni Gabrieli, or...