Say hi to the Android Mascot!
They have a hit a ground breaking 600,000 apps and 20 billion installs so far and the numbers are exponentially growing. 2012 Q3 share market results are encouraging with Android's share rising to 47.3%. This, definitely, is good news for budding Android app developers like you.
A small introduction about Android to the newbies:
Android is fork of Linux OS for the mobile.
There were days when developers of other mobile OS like Symbian and Meebo were having sleepless nights developing apps for their platform, until Android was born. Today 68.1% of the world's smartphone market is dominated by this cute green devil.