I'm assuming that you have some basic programming experience. I just want to explain the xCode layout. When you open xCode up for the first time you should get something like this:
You can see the column on the right in the picture has several files (those colored rectangles). However, your column may be empty. This is because that column shows previous projects, and you do not have any previous projects.
The square on the left has 3 options:
~ The top option (Get Started With a Playground) does not let you create an app. If you have some basic computer knowledge, it is basically useless. Otherwise, it is a good place to experiment with how to create variables and simple functions.
~ This middle option (Create a New xCode Project) is the one you will probably use the most if you are trying to create iPhone apps. This gives you the required files and the layout to create an app.
~ The bottom option is not one you will use if you are new to xCode. Personally, I have only used it once. It lets you import projects you may have saved on websites such as Github and work on projects you have tagged as favorites.
Student whose life is currently a dark swirly void of confused bird noises.