catch_up
1. [ verb ] reach a the point where one should be after a delay
Examples:

"I caught up on my homework"

Related terms: reach come_back follow
2. [ verb ] (education) learn belatedly; find out about something after it happened
Examples:

"I'm trying to catch up with the latest developments in molecular biology"

Related terms: learn
Similar spelling:   catchpenny
  catch_fire
  catchphrase
  catchfly