The basic moves to remember are 'Throttle back' and 'Rev up'. Which translates as: When reducing power retard the throttle first, and then the propellor control. When increasing power select full RPMs first, then increase the throttle setting. I found this in a very old manual years ago and somehow never forgot it. It sometimes comes in handy still
This is a basic rule of course so be aware that your POH is the final authority on engine handling.