Plug the end of your microphone into the input jack in an audio receiver.
Place the microphone on a stand and adjust the stand so that the mic is at mouth level. You can purchase microphone stands of various sizes from audio supply stores.
Position the microphone so that it is between 3 and 6 inches in front of your mouth.
Speak directly into the microphone. The background and ambient noise will be at a minimum and your voice should be able to be heard clearly.