read up (on/about) something
phrasal verb with read verb uk/riːd/ us/riːd/ read uk/red/ us/red/
C1 （为了得到有关信息）广泛阅读，攻读，研究
to spend time reading in order to find out information about something
It's a good idea to read up on a company before going for an interview. 在去参加面试前，最好仔细了解一下该公司的情况。