I have a nikon DSLR camera. I want to use it,but i do not know.Is there any school for photography in ernakulam(Kochi)

You can get enough knowledge about your camera on http://en.wikipedia.org/wiki/Digital_single-lens_reflex_camera If you just want to use camera then learn its operation from some photographer and practice yourself still you need to do course you can check the nearest poly technique