I have a power steering leak, after I fill it 24 hours later it will be empty.

You would be the best judge if it's something you would like to repair on your own or not. It may be very awkward to replace p/s lines if the are under the vehicle. I would recommend a professional inspection at least. P/S fluid loss like that could quickly damaged the pump.

power steering is under pressure...try filling it and turning steering wheel at idle that will show you where it is coming from,could be simple like a hose...