Hello all. I've been in the IT world for over 25 years, and done commercial application development for the last 15...mostly client server stuff on Unix/Vax platforms, with some experience on IBM Mainframes as well as Windows/Mac desktop development. However, I have no experience with mobile devices, nor do I know anything about the Android OS. The open development platform is one thing that really attracted me to the Droid, I've been a Linux user since early 90s when only us Geeks had ever even heard of Linux..and am a big fan of Open Development. So, how does one go about getting started developing applications for the Droid? Is there an SDK out there for free download, complete with examples of how to create Droid apps? How about some documentation somewhere about how the OS works? Thanks in advance..