read up on
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read up on (someone or something)
To increase one's knowledge of a person or topic by reading about them or it. I better read up on this material before I try to teach it tomorrow. The more I read up on the political candidate, the more I came to distrust him.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
read up on
v.
To study or learn something by reading: I read up on the places I plan to visit before I travel.
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.