Dslr Accessories? Nikon D3100?

What are some needed accessories for the Nikon 3100. I just purchased it and I don't know what else to get besides a UV filter, tripod, and memory card.
Recommendations?
I'm looking to get things from either newegg or adorama.

A good UV filter to protect the front element of your cameras lens is a good idea.

See how such a filter saved my 24-85 mm Nikkor.

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Adding some 2 gb memory cards is a good plan. That way you will not be temped to save a bazillion images on one card and later loose them all when the card becomes corrupt. Better to copy all the image files to your computer at the end of the day and then format the card(s) so they are ready for your next shoot.

You may want to save your pennies and get a good tripod with three-way head for around $150 to $300 instead of buying a cheepie that you will have to replace in any case later

A good book about photography. Read it thoroughly first with the camera and manual beside you.