Installation
To install the application download the disk image and put the application where ever you want.
The application needs a compiler, and Apple distributes a free C/C++/Objective-C/Java programming environment. It is a separate install. All new macs come with the installer package already in the Applications folder (Installers folder). Just click on the XCode installer. Otherwise, sign up for the free developer pass on http://developer.apple.com/ and download the latest XCode installer.