we were asked to develop an iphone app like the one in the figure.
The problem is: we have no experience in IOS development.

For the basic part I can handle the learning curve, but i need suggestions, best practices on the UIKit model and controls.
This is a newspaper app.
The accordion control shows/hides content based on categories retrieved by an ASP .NET CMS on which we have no control.
I can suggest to the CMS holder to develop a couple of web services (WCF) but i’m not sure how to interface iOS with MS technology.
Furthermore, i have the idea that simple aspx that returns XML/JSON data will be easier to call, and support, but slightly less secure.
So, suggestions? Tutorials?
If you like to use JSON and a very good HTTP-request-framework I have two links for you. Both sites contain various tutorials on how to use them.
Concerning the request and delegate stuff: For a start, I would skip the delegate part and use a synchronized HTTP request called in a thread (you’ll see what that is on the second website). That makes the response handling a lot easier for the start. But I personally think, that using an asynchronous request is not a must. It’s just nicer, if the architecture allows it. In my application, it wasn’t realizable without lots of code overhead.