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+# iOS tutorials
+
+# Welcome to the GStreamer SDK iOS tutorials
+
+These tutorials describe iOS-specific topics. General GStreamer concepts
+will not be explained in these tutorials, so the [Basic
+tutorials](http://docs.gstreamer.com/display/GstSDK/Basic+tutorials) should
+be reviewed first. The reader should also be familiar with basic iOS
+programming techniques.
+
+The iOS tutorials have the same structure as the [Android
+tutorials](Android%2Btutorials.html): Each one builds on top of the
+previous one and adds progressively more functionality, until a working
+media player application is obtained in [iOS tutorial 5: A Complete
+media
+player](http://docs.gstreamer.com/display/GstSDK/iOS+tutorial+5%3A+A+Complete+media+player).
+
+Make sure to have read the instructions in [Installing for iOS
+development](Installing%2Bfor%2BiOS%2Bdevelopment.html) before jumping
+into the iOS tutorials.
+
+All iOS tutorials are split into the following classes:
+
+  - The `GStreamerBackend` class performs all GStreamer-related tasks
+    and offers a simplified interface to the application, which does not
+    need to deal with all the GStreamer details. When it needs to
+    perform any UI action, it does so through a delegate, which is
+    expected to adhere to the `GStreamerBackendDelegate` protocol.
+  - The `ViewController` class manages the UI, instantiates the
+    `GStreamerBackend` and also performs some UI-related tasks on its
+    behalf.
+  - The `GStreamerBackendDelegate` protocol defines which methods a
+    class can implement in order to serve as a UI delegate for the
+    `GStreamerBackend`.