What can you do? Well without being too specific (there may be special events for example). You take care of your town for a reward, grow fruit to sell to make money, find things underground, go fishing, meet new people, catch bugs, shoot things out of the sky for rewards, upgrade buildings, build projects round your town. It's also a social game, so you can visit your friend's towns, play games on the island, trade items to complete your catalogue.
Personally I think it'll be a great introductory game to the series if you haven't played before due to all the features they've added that we haven't had before. Go for it!
I was waiting for 2 things before buying a 3ds 1)an XL version - check 2)a game to motivate me to buy one - ACNL - check. Now I am just waiting until relase time to see if we get the ACNL version XL in the US. So I vote yes you should get it
Proud Mayor of CatsTown
DREAMIES: Rudy, Purrl (or Kitty) and Kabuki (or Punchy)