Congrats on the new toy. You will need cleaning supplies as well. Most of us already have these around the house and vary from windex, rubbing alcohol, silicon, wd-40 and so on. I would suggest a good kit with all the starting necessary goods. A jag, patches, cleaner, bore mop, wire brush.

These are good starters:

http://www.basspro.com/webapp/wcs/stores/servlet/Product_10151_-1_10001_55501_425010004_425000000_425010000_425-10-4

http://www.basspro.com/webapp/wcs/stores/servlet/Product_10151_-1_10001_55529_425010004_425000000_425010000_425-10-4