Tips for dlsr cameras (Nikon d5300), I'm a beginner?

I just ordered a Nikon d5300 dlsr with an 18-55mm lens as well as a 50-200mm lens, does anyone have any tips or settings for when the camera arrives, I would really appreciate if you could give me some tips as I'm a beginner, also can you explain the terms shutter speed, ISO, and Aperture.

Learn photography.

http://keerok-photography.blogspot.com/2012/10/learn-photography.html

This web site provides a very useful resource for beginners.

http://www.luminous-landscape.com/index.shtml

Firstly. READ THE INSTRUCTION MANUAL
Then stick all controls on to Auto (or Programme) and practice as much as you can.
Then you can gradually learn about manual controls.