I recommend that you go to the Android Developer website: http://developer.android.com/index.html and go through the tutorial sections before you start coding your own app. This is going to save you a lot of time, trust me!
Agree. With no Java experience, no eclipse experience, and no mobile phone experience, the google developer site got me up and coding Android applications in no time. It is a waste to do anything without first going to that site and doing following their guides.