It's time to explore the Android platform! If you're a bit nervous, let me assure you that you don't have to worry; you should be nervous only because you're excited.
If you're ever unsure about anything in the code, you can download the full source code from my GitHub account, located at http://github.com/donnfelker. From time to time, I provide code updates to the source. You can also find other examples in my other source repositories stored on the same site. Finally, you can find the same material on the For Dummies website at www.dummies.com/go/androidtabletappdevfd.