read up

read up (third-person singular simple present reads up, present participle reading up, simple past and past participle read up)

1. (transitive, intransitive) To learn (about something) by reading.
   • 1925 July – 1926 May, A[rthur] Conan Doyle, “(please specify the chapter number)”, in The Land of Mist (eBook no. 0601351h.html), Australia: Project Gutenberg Australia, published April 2019:

     "Pestilential nonsense!" "Have you read it up at all, Father?" asked Enid. "Read it up! I, with all my interests and no time for one-half of them! Enid, you are too absurd." "Sorry, Father."

   • 28 November 2009, Indian Express - Nayagan was actor R Madhavan's introduction to Kamal Hassan

     After watching the film, I read up about it in the newspapers. When I came to know that Hassan was a 30-year-old actor then, I was completely awe-struck

When intransitive, it is often constructed as read up on

• Pardue