Another wonderful idiom that you can use in everyday conversation is:
" learn the ropes "
It means to learn how to do a new job.
A. This is our new employee. Please help her to learn the ropes.
B. Okay. Come with me. First you have to load the boxes onto the trucks. Then you have to ...
I just started a new job this week and I 'm still learning the ropes.
It took me a few months to learn the ropes, and then I started to make money.