Getting Started?

[Murky]

I've been reading the documentation and looking at the examples, but I'm a bit confused about how to get started with Unity and SFS. The goal is a dedicated server for an MMO. Is that where extensions come in to play? Looking at the demos from the Unity API, there is no use of extensions; or at least I did not see that.

If anyone has any help for getting started, I would appreciate it. Thank you.