Just a heads up about a new multiplayer tutorial - and that the series of tutorials has been rearranged. Previously the move from tutorial 2 (chat room) to tutorial 3 (real-time game with input prediction and lag compensation) was a pretty big jump in the learning curve. To address this there's a new intermediate tutorial covering the Pong example, which is a much simpler example of using Sync object. Hopefully this makes the transition to the fully-lag-compensated real-time game easier to manage.
Since this is going before what used to be tutorial 3 in the series, the pong tutorial is now tutorial 3 and the real-time game tutorial is now tutorial 4. So the full series is now:
Multiplayer tutorial 1: concepts
Multiplayer tutorial 2: chat room
Multiplayer tutorial 3: pong
Multiplayer tutorial 4: real-time game
There's been some editing across the series so let me know if anything doesn't make sense or makes an incorrect reference somewhere. I hope this helps make it easier to get started with the exciting new Multiplayer features!
The manual entry for the Multiplayer object is also in the works and will be published before the next stable release (which hopefully will be soon).