learn the ropes
US /lɜrn ðə roʊps/
UK /lɜrn ðə roʊps/

1.
要領を覚える, 仕事のやり方を学ぶ
to learn how to do a particular job or activity
:
•
It took him a few weeks to learn the ropes of his new position.
彼が新しい職務の要領を覚えるのに数週間かかった。
•
Don't worry, you'll soon learn the ropes here.
心配しないで、すぐにここの要領を覚えるよ。