As a developer who is taking on Android as his first mobile target, I have found that joining mailing lists for apps that are being group-developed helps a ton.

As a developer who is taking on Android as his first mobile target, I have found that joining mailing lists for apps that are being group-developed helps a ton. Gina T (from lifehacker/smarterware) is starting a new app for her todo.txt idea that is totally OSS, so you can follow along, fork it and get into the code yourself, or use the community to find people to ask questions to.