Welcome to DT. I wish you the best of luck with your first uploads and getting that new camera for your Birthday! :)
Best advice I can give, is to keep up with the message boards, DT news, and the blogs. All of these are very helpful!
Just so you know it usually takes about 8 days for pending images to get approved or rejected. So patience if very important. :) Also if you get any rejections (as we all do) just learn from them, don't get discouraged, just keep uploading! Before long you will know exactly what the editors are looking for. Then you will have less rejections and a lot more fun.
Good luck, hope to see some of your images soon! :)
Nikon Equipment, Nikon Lenses, Professional Photo Software