You may start with a Wikipedia or a commercial website to get basic familiarity with a concept - but don't stop there.
Credible, appropriate sources will add great value to your conceptual design. How do you evaluate credibility? Follow the guidelines provided by your course instructors. You can also apply the CRAAP test.....
image credit: http://mjmora.blogspot.ca/2013/11/evaluating-sources.html
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