Secondary sources provide good overviews of a subject, so are particularly useful if you need to find about an area that's new to you. They are also helpful because you can find keywords to describe a subject area, as well as key authors and key references that you can use to do further reading and research.
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Answer:
Secondary sources provide good overviews of a subject, so are particularly useful if you need to find about an area that's new to you. They are also helpful because you can find keywords to describe a subject area, as well as key authors and key references that you can use to do further reading and research.