If you're looking for people to play with, check out the train station category. Anyway, you should really figure out what kind of tiles you want before you start to place them all over the town. It definitely wouldn't be worth the effort if you just jump right in without a clear idea as to what you vaguely want as an end goal. You may end up getting lucky and liking it, but chances are you might not be feeling the tile you choose (if at random)
Check out some of the tile patterns on pinterest? to get a gist of what you may want to try.