If you’re just getting started with the Service Manager beta, Marc Umeno (one of the team’s Program Managers) has a great series of posts giving a walkthrough of the process. Check out Basic Setup Walkthrough and Creating a Configuration Manager Connector for some good starting tips.
If you haven't yet downloaded your beta copy of Service Manager, get it from Microsoft Connect. Fill out the nomination survey and you will see a page that contains links and instructions for downloading.
The Microsoft Team Blogs Directory has been updated to 214 to include the System Center Service Manager