If you see the following image, then welcome to Interface Builder! You will likely spend a substantial amount of your time in this application, so it will be worth your while to become intimately familiar with how it works.
So what exactly is Interface Builder? The name itself is quite descriptive, and yes, in fact, you do build interfaces with Interface Builder. You can use it to visually lay out exactly what your interface will look like, from what fonts to use to how you want your images scaled.
Yet, Interface Builder is much more powerful than a layout tool. Say you add a button to your interface. Using Interface Builder, you can have one of your methods called when the button is tapped. So, not only do you use Interface ...