Now that you have a good understanding of navigating Xcode on your own, let's head back to the file that was open when we first started our project. In the project navigator, this is the very topmost file; it has a blue icon, and is named the same as your project:
This file represents your project's settings. There are a lot of important sections in the project settings file that you'll have to interact with in pretty much every project, from app icons, to iCloud capabilities, to custom compiler settings. In this section, we're going take a tour of the most commonly used parts of the project settings file.