You can just level up or you you could download the cityville tool which you download from .cityvilletool.com
yes i can Download . from your mouth
You can buy cityville cash, only it costs real life money.
Yes, it is. Unless you buy CityVille Cash.
you are dumb
You can complete offers and do surveys. That's how I got Playfish cash without paying. Very good.
fb credits
you have to have loads of businesses and the game will give you 1 cash every 2 or 3 days
Completing goals, passing levels, or buying some.
There are no cheats to get more cityville cash you can make some in the game by helping out neighbors and so on but you cannot just press a key and get some. If you are after a full guide you should go to the URL in the related links.
you don't
at zynga.com
Every time you level up you get 1 free city cash. Doing offers for free city cash is an option, but i prefer not to...