Thanks for the suggestions, then i'll have to wait for some time in order to lay my hands on the Nikon 55-300 VR. and for prime it'll take some more, or rather i'll go for the prime first and then for the zoom one later.
First, play around with the kit lens, its a f/3.5-5.6 and good walkaround lens. Learn playing with settings, shutter speed, aperture because starting instantly with a prime (since I assume you're a novice), that too with a prime (sans AF motor ~5K), getting focus right might be a typical task then.
Play with MF and AF first, get hold of the camera then graduate to prime or zoom lens.