Something to read and take in (6)
I believe the answer is:
digest
'take in' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for digest that I've seen before include "Summary or shortened version" , "Absorb and assimilate, like food" , "Shorten" , "Assimilate - summary" , "Assimilate (mentally)" .)