Here is a tip:
Before taking off, write down the destination airport's critical navigation and information frequencies and ILS runways and their headings. It is a good habit also to keep your manual heading ticker on track with the GPS ticker (direction indicator) during flight. Makes it easier to transiston from AP to manual control when ATC says its time to decend or turn to approach your destination airport. Its also a good idea to pre enter these frequencies in your nav1+2 plus your com2 radio before taking off, as well as setting the ADF/NDB frequency.
I suppose you could add these steps to your pre approach check list. But to save time and frustration, I prep all these things prior to takeoff from the departure airport.
Soon you will develop a procedure that is comfortable for you to work with, and then adapt that to established procedures over time until your performing these tasks automatically. It can certianly be a furball of sorts trying to punch in ILS and headings while paying attention to ATC and executing their instructions while avoiding that AI Piper trying to cut in front of you on approach during dense fog at night with 30mph winds!
Isnt it funny that ATC will come over the radio in dense fog at 2,500 and say "Traffic Alert! Such and such airplane less than 1 mile at 12 o'clock, report them in sight"!!

Yet you know darn well you cant see squat much less that other guy seeing you, but you hear that other guy report back "have the traffic in sight" I guess ATC didnt look out the window! Or there are infrared goggles located at certian airport gift shops and I just have not found the right gift shop yet.
