How to Customize Xcode for Your iPad App
Xcode gives you options galore when it comes to creating an iPad app; you probably won't customize much of Xcode until you have a bit more programming experience under your belt, but a few customization options are actually worth thinking about now.
By default, Xcode is downloaded to /Developer/Applications, where you can track it down to launch it. When you launch Xcode, you see the Welcome screen.
Choose Xcode→Preferences from the main menu and click the Debugging button on the toolbar.
The Xcode Preferences window refreshes to show the Debugging pane.
Choose Show Console from the On Start drop-down menu; then click Apply.
This step automatically opens the Console after you build your app, so you won't have to take the extra step of opening the Console to see your app's output.
Click the Building button in the toolbar.
The Building pane appears.
(Optional) In the Build Results Window section of the Building pane, choose Always from the Open During Builds drop-down menu; then click Apply.
The Always choice opens the Build Results window and keeps it open. You might not like this, but some people find that having the Build Results window onscreen all the time makes it easier to find and fix errors.
Click the Documentation button on the toolbar.
You may have to scroll the toolbar horizontally to access it.
Select Check For and Install Updates Automatically and then click the Check and Install Now button.
This step ensures that the documentation remains up-to-date and also allows you to load and access other documentation.
If you want the Editor to show line numbers, click Text Editing in the Xcode Preferences toolbar.
The Text Editing pane appears.
Select the Show Line Numbers check box.
This check box appears under Display Options.
The Xcode Preferences window closes.