get in 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 in the swing of things.
get in(to) the swing of things
Fig. to join in with people and their activities; to become more social and up-to-date. Come on, Bill. Try to get into the swing of things. John just couldn't seem to get in the swing of things.