Coming from a world of Java (Java SE of no particular platform and Android), I find the iOS documentation surprisingly hard to navigate. In the Java world, it's common for documentation on a class to contain at least a page of introductory material to the class including its purpose, its function, major caveats, some example code, etc. The iOS documentation splits all of that up between Getting Started articles, the class documentation, and separately-downloadable sample code projects. It's all there if you know where to look, but it's inconveniently spread out.
