It looks like you have a nice new toy for $11.00!
You should be able to use your flash by using all manual settings. I do this all the time with my cheap flashes. Set your camera to M, and play around with the settings a little. I find that a shutter speed of 180 is good, and adjust the aperture from f5.6 to f8.0 depending on distance. Your flash should have some guide information that came with it, or it is sometimes printed on the back of the flash. At any rate adjusting either f stop, ISO, or shutter speed, you should be able to find a combination that works.