get the hang of something

Từ điển Oxford Advanced Learner 8th

get the ˈhang of sth idiom
(informal)to learn how to do or to use sth; to understand sth
• It's not difficult once you get the hang of it.
•I can't seem to get the hang of this game.
•I never got the hang of negative numbers.
Main entry: ↑hang_idiom