How to create service in Android and consume it?

I am very new to the Android platform. Now in my app I want to create service and so please give me some info that how to create a service and consume it in my app. And how to start the service when th开发者_如何学运维e OS starts up?

All the information that should be necessary, including examples on how to create and consume services, is available directly from the Android documentation here.

It is doubtful that any answer could provide more insight into creating and consuming Services then that link.