title: Adding core data to my iPhone app
body: <p>I have been here before, asking for a mapping library that could store objects in a database. Some one told me about the Core Data Framework. I have read a bit about it and I kindda understand it.
  I have created some "test Core data projects", where I have worked with simple problems and models ala Person and Group. But now I want to experiment with implementing Core Data to one of my small iPhone apps. How do I do this? Subclassing from NSManagedObject and make a Managed Object Model?
  I know that there is more to it, but I havent found anything on google og apples site. Maybe Im looking in wrong direction while googling and searching.
  A link to an article/tutorial explaining me how to add Core Data to my project would make my day.</p>