If you are new to Android development, check out my
List of Android Development Resources & Links here in the articles area. That should help getting you started.
Next, the news app. What are the most basic features a news app must have? I'd say, receiving and displaying news. So find out how to do both of those first. Also: How should the user navigate from one news item to another?
After that you can ask yourself, what else the app is supposed to do. Maybe automatically update at a set interval? Maybe allow the user to follow certain topics? You could have notifications at certain events (though you shouldn't overuse this feature, it can easily become bothersome). Should your app synchronize over several devices? Do you want to be able to mark news items as read or unread? And so on and so forth.
Before you actually start programming, it is best to know what your app is supposed to be able to do, at least in general. Then you can start planning the project in a way that will allow you to more easily build the various features.