Nikon D5100, shutter speed won't go below 1/200?

I use a nikon d5100, i never tried taking pictures in fast shutter speed, but now i'm trying to. And i realized the camera won't let me decrease beyond 1/200. And I thought the camera is capable of up to 3200 or some such. I tried in full manual mode too.
any help?

I think you mean the camera won't let you select faster than 1/200th of a second, that's because you have the flash popped up. 1/200th of a second is the fastest shutter speed you can use with flash (the X speed, the fastest shutter speed you can use and have all the sensor exposed).

Get out of the program mode and instead use the manual mode. In the manual mode, you will have to use the cameras light meter to get the correct exposures.

Wasn't this covered in your first couple of lectures when you studied photography?

You have everything confused. 3200 is an ISO setting. Your fine D5100 can shoot at shutter speeds of 1/4000th second, but you have to learn how to use it.