Below is a list of Android resources:

• Android Developer Website - The official Android Developer website for training, API Guides, Referenced, Tools, Google Services and Samples
• Google Android Training - great web site for all things relating to Android.
• Android Authority - Lessons on how do specific tasks with code samples.
• Android Discuss - Android discussion group
• Stack Over: Android - A collaborative site for all type of programmers to ask questions or give answers.
• Developer.com - Developer website  with technical articles
• Open Handset Alliance - Android manufactures, operators and developers
• Android Market - Buy and sell Androids apps
• OpenIntents - Public intent registry and third-party Android libraries and extensions.
• anddev.org - Android developer forum
• FierceDeveloper - Weekly newsletter
• gitHub.com - developers use to build personal projects, support their businesses and work together on open source technologies.
• Xamarin - solution for every stage of the mobile lifecycle
• Java Articles - Beauty lies in simplifying things...
• Google Developers  - simplify your Android development, grow your user base, and monetize more effectively with Google services.
• Android Developer Blog - Android developer blog
• DevBytes - YouTube channel on Android