 <p>To capture images you can use the <a href="http://developer.apple.com/iphone/library/documentation/uikit/reference/UIImagePickerController_Class/UIImagePickerController/UIImagePickerController.html" rel="nofollow noreferrer">UIImagePickerController</a> To up- and download images to/from a web server you can use <a href="http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/URLLoadingSystem/URLLoadingSystem.html#//apple_ref/doc/uid/10000165i" rel="nofollow noreferrer">NSURLConnection</a> and it's companion.</p> <p>And it's always a good start to look into some apple sample codes. They're on the related classes documentation at the top under "Related sample code".</p>