Some features include:
* YouTube feeds to view latest strategy guides
* Twitter feed to view the latest tweets about the game
* In-game stats and info reference for structures & units
* Event leader boards
* Access to official Zynga content
* And much more to come...
The "Handbook for E&A" is not an official app and is not related to the Zynga company.
Content for this app is taken in part from the official game and is served for the sole purpose of player enjoyment :)