Answer: readupon

AnswerCrossword Clue
READUPONResearch in the library
READUPONLearn about
READUPONStudy
READUPONLearn about, as through research
READUPONLook into, in a way
READUPONResearch
READUPONDid a bit of research
READUPONLearn about through books
READUPONResearched