to learn how to do something, especially if it is not apparent or straightforward =  to learn how to do something or use something

A: I've never used this program before.

B: Don't worry. You'll soon get the hang of it.

The kids are beginning to get the hang of marching in formation.

"Try it again." "Oh, no, I'll never get the hang of this!"

I’ll teach you how to use the design program – you’ll get the hang of it after a while.

It seems complicated at first, but you’ll soon get the hang of it.