I've written some days ago that I was fascinating by the first CTP of Acropolis, the new set of tools borned with the idea to help developers to make modular applications.
Acropolis helps the developer life a lot, but obviously (as every new technology that appears on the horizon) must be well understood (expecially the interaction betweent the parts).
Ezequiel Jadib has make an interesting post about how to write a simple "Hello World" application with Acropolis. "Hello World" application is always the first step when learning a language, so check the post and start to be in love with Acropolis! 