1995 Cadillac Deville an array of information messages

Other Category problem
1995 Cadillac Deville V8 Wheel Drive Type unknown Automatic 120000 miles

I was driving on the freeway at 65 when 1 message flashed battery no charge, I then lost power steering, another message flashed, engine coolant hot, then another, idle engine. I managed to make it home, lifted the hood and found coolent had surge out of the coolent res. I have been having problems with heating the car but figured it was the thermostat. Any ideas on where to start. Thanks