Android source code and SDK

Android Application Developers Main entry point

Welcome page for accessing SDK

Android Open Source Project Entry page

Open Source  

Android Git Repositories – direct link to source code

Learning about Android 

Google I/O Developer Conference Session

Android Development Community with many tutorials

Google channel on YouTube

Open Handset Alliance

Official Page of the Open Handset Allliance 

Featured links of the month  

Everything you need to know about Android 2.0
– The Technology that makes Google’s Éclair so tasty

Android news, guides and discussions

http://www.talkandroid.com/

http://androidcommunity.com/