During the game you will be given various tasks and objectives to complete. Doing so earns you XP and Coins, and is required to unlock certain items and different types of buildings. You can see current goals on the left hand side of the screen. You can get the lowdown on what each task entails by clicking on its icon. This will also show you how close you are to achieving that particular goal. You can see tips for completing each goal at the bottom of its menu.
Look out for the new goals signal which pops up on the top left of the playing area
There will be at least 3 goals underway at any time. More will always be available for you to undertake. It is possible to rush through goals, effectively skipping them, by spending City Cash.
Having completed a goal, you are able to post a message to the Live Feed that allows your Neighbors to earn XP, Energy or Coins as a result of your efforts. This is a good idea, as it encourages your friends to reciprocate the action whenever they complete a goal.
First Goal - Build a neighbourhood