My brakes went out what do I do?

What is your question?

I have no brakes at all on my 94 wagon Gl. Everyone is saying I need a new master cylinder, a new rotor for the driverside, and new brake pads(which I knew that), but when I went to auto zone to get the parts they asked me if my car has super high output which I know nothing about. How do I find out if my car has that and do I really need a new rotor? I'm not sure whats wrong, but all I know is that there is no brakes at all and it was grinding on the driver side before they went out. Thank you if you can help out.