Here are the top selling 3DS games in March according to NPD data

1.Super Street Fighter IV 3D
2.PilotWings Resort
3.LEGO Star Wars III: The Clone Wars
4.Rayman 3D
5.Tom Clancy Ghost Recon: Shadow Wars
6.Super Monkey Ball 3D
7.nintendogs + cats: Golden Retriever & New Friends
8.Ridge Racer 3D
9.Steel Diver
10.nintendogs + cats: French Bulldog & New Friends

Here is a tutorial, that I found online, that shows you how to connect your 3DS console to the internet