Hi,

I would suggest you first go through Android Developer Guide http://developer.android.com/guide/index.html
It will give you good start.
Then you can start learning from Blogs.
Here are some of blogs which helped me a lot in Learning Android.

http://saigeethamn.blogspot.com/2010/05/table-of-contents.html
http://www.vogella.de/articles/Android/article.html
http://mobile.tutsplus.com/tag/android/
http://mylifewithandroid.blogspot.com/
http://tutorials.jenkov.com/
http://developer.android.com/guide/index.html
http://marakana.com/forums/android/examples/
http://mobiforge.com/Developing

Have Fun In Android..
Vipul

Beginning Android Application Development Ebook

http://androidcontrol.blogspot.com/2011/10/beginning-android-application.html

How do we learn this? I want to learn

I would just prefer you to download this ebook,which have all the android features.

http://it-ebooks.info/book/718/

Regards
Android developer
Trinay Technology Solutions
www.trinaytech.com
5705750475

I'd recommend checking out Beginning Android Games by Mario Zechner and Robert Green. Their book is solid, and they're both great guys who care a lot about the Android gaming community.

Amazon Link: http://www.amazon.com/Beginning-Android-Games-Mario-Zechner/dp/1430246774

This book for advanced android developers check it out.

http://commonsware.com/AdvAndroid/
Regards
Android developer
Trinay Technology Solutions
http://www.trinaytech.com
5705750475

For a beginner I will suggest you to go through all the articles and information available at developer.android.com. Once you are done getting knowledge with the basics then move on to books available over internet.

This book for advanced android developers check it out.

http://www.xtensivearts.com/topics/tutorials/
http://commonsware.com/AdvAndroid/

Regards
Android developer
Trinay Technology Solutions
http://www.trinaytech.com
5705750475

Commonsware books are good for android.
Dont refer the "Professional android application development" by "Reto mier" it is confusing .It is not suitable for beginner.

You might want to start out by checking out the Android reference site:
http://www.linkedin.com/redirect?url=ht ... droid%2E...