If you know html and javascript (or don't really) try
http://platform.telerik.com
It runs in your browser (or standalone) and they have a free version for 2 projects. You can create Android, iOS, Windows Phone 8, Blackberry all in it seamlessly. Don't have to write different versions.
The Android SDK is good but if you are new and the app doesn't have 3d graphics then it might be a good alternative.