A step by step tutorial into the firebase application.
You can find the github with the code here https://github.com/AndreiD/FireBaseTu...
Website: http://androidadvance.com/tutorial_da...
Cool stuff: http://androidadvance.com/cool
About firebase:
Store and sync data with our NoSQL cloud database. Data is synced across all clients in realtime, and remains available when your app goes offline. The Firebase Realtime Database is a cloud-hosted database. Data is stored as JSON and synchronized in realtime to every connected client.