Complicated - not while I've still got dials in front of me ;-)
Ajax,
The instruments on the aircraft you'll be learning on are no more complicated than what was around during WWII. Don't wish to state the obvious, but, learning what these instruments do is part of learning to fly.
Get reading up on the first PPL book, use the "lessons" in a PC flight sim to get the basics. Your fear sounds like that of the unknown. Like a 17 year old who has never seen a car and wants to learn to drive; "Hands on the wheel, feet on pedals, whilst looking out the window - and I have stalks that work lights I can't see too! Are you mad?!"
Same goes for flying. It's nothing a good instructor can't fix. Trust me.
Old Ben