get into the swing of it/things
To become comfortable with something and begin to do it more efficiently and/or enjoy it. You've only been at your new job for a week—I'm sure you'll feel better once you get into the swing of things.
get in/into the ˈswing (of something)
(informal) become involved in something and start to do it well and enjoy it: I’ve only been at college a week, so I haven’t got into the swing of things yet.He was just getting in the swing of his performance when all the lights went out.