First off, congratulations on winning that Bird- it's a GREAT meter. As for what to use it with, it's an In-Line meter, so it goes between the transmitter and the load, whatever that may be. Use a short piece of coax from the radio to the meter, and then either connect it to your antenna feedline OR to a dummy load with another piece of coax.
Since the Bird is a 50-Ohm instrument, you should be sure the load it "sees" is 50 Ohms, and non-reactive- that is, purely resistive. That can be either a dummy load, or a properly tuned resonant antenna. Most commonly, the Bird is used to check the output of your rig into a dummy load, so you''re not radiating while testing (unless you properly identify the transmission, of course)
It's also important to be sure the "slug" is the proper one for the power level and frequency range of the transmitter, so the results are correct and the slug and meter aren't damaged.
I'm sure someone in your club can advise you- just ask at the next meeting.