Congratulations. Have you tested the meter on some voltages, resistors, diodes, currents, etc? For a good meter it's normal to display something else than 0 (on some ranges). I think the getting started manual from fluke explains for every measurement option what you should see on the display if everything is ok.
50 Volts with nothing connected to the probes does not sound like a healthy meter, or environment. But for now don't worry about the display too much, test it on some known values, like batteries, lab power supply, function generator, resistors, diodes, etc. and if the readings are about what you'd expect it should be fine. And read the (getting started) manual.
Thilo.