Here are some useful resources for the installation:
In addition to the textbook, these Android sites contains a wealth of information, and are very highly recommended.
You need to write a Hello World program that displays on the device (or emulator) screen:
Hello from <your_first_and_last_name>
Follow this Android Developers tutorial, including the part on upgrading the UI to an XML layout. Once you have done that, all you need to do is change the string that is displayed.
You need to submit in ecommons:
Please name these files as lastname_firstname.(apk|zip) .
Sounds easy? It should be -- but it requires you to correctly install all the above development tools and environments, so it will still take you some time, likely some hours.