When prompted to choose between receiving and not receiving notifications, select either choice. Select "OK" when asked to name the castle. Hurry the construction of the first two floors, unless you need to stop playing soon; if so, just hurry the construction of the first floor. Rarely the job you give your resident will be his or her ideal job, and you will get three credits for that. Do not hurry the stocking; it takes one or two minutes, depending on the floor. Select "OK" when asked to name the princess. Watch for the fireworks that may appear. Usually it gives a few coins, but rarely it gives a credit. Build the next two floors, then help the princess. Sometimes she gives one or two credits, other times she gives coins. Occasionally these coins will give you enough to build an extra floor. Do not bother answering the door; it is just a dwarf who will complete one of your floors. Finally, look for the cloud that appears above someone's head and tap them. You will get a credit. After all of this, enter your device settings and clear this app's data. Then, repeat the process. You can use the credits in any other game that utilizes Glu Credits.