no good flashcards atm. The only one is Gateway 3DS that requires REALLY old firmware.
Dont forget to buy a Extra Charger... the XL doesnt have one...
If you need some good titles to play:
Kingdom hearts 3D
Kid Icarus Uprising
Monster Hunter 3U
Pokemon X Y (soon)
Luigis Mansion
Animal Crossing New Leaf

You probably see that most of them are 1st party...
anyway... if you have more questions feel free to ask
Welcome to the Scene :>