I’ve gathered some links and samples to allow anyone to get started quickly and easily with background agents and alarms/reminders on Windows Phone! Here are they are:

 

Background Agents Overview for Windows Phone

How to: Implement Background Agents for Windows Phone

Background Agent Best Practices for Windows Phone

Unsupported APIs for Background Agents for Windows Phone

Background Transfer Service in the "Tidy" application

Adding Multitasking to Your Application

http://www.jeffblankenburg.com/2011/11/25/31-days-of-mango-day-25-background-agents/

http://www.jeffblankenburg.com/2011/11/26/31-days-of-mango-day-26-background-file-transfer/

Skydrive folder with samples: https://skydrive.live.com/?sc=documents#cid=10E568ADBB498DC8&id=10E568ADBB498DC8%211668&sc=documents