I was looking into Android development. I googled for this and noted it is more popular among the developer communities than the iPhone development. Reason? Android apps could be developed in Java and for iPhone one has to get used to a totally new environment. In my view, it is a huge plus point for Android.
When studying, I noted the best source for beginners would be to study at android development. However, I would also recommend the book Android Application Development: Programming with the Google SDK
. This is an excellent book and would greatly help any one starting Adnroid development.