Here is a tech talk by the nefarious comic artist, Eric Burke (we're friends/colleagues/blog rivals).
Eric discusses his initial experimentation with Android. He's been working with Ed Burnette's e-book 'Hello Android', and has some good stuff over at his blog.
It is not news that the mobile platform is the Next Great Battlefield, but intro material on Android is news. With all of the massive players in this space, it is important for us to pick a horse and bet on it with a time investment and experimentation.
I won't tell you which one to learn, but Android is a reasonable choice. You can see why in the video...