Lemmo is right. Although you can certainly have fun without learning the nuances of the game there are a lot of features that remain a mystery unless you feel compelled to investigate on your own.

The STAR system is one of them. While it may seem pretty straightforward once you learn it, discovering it in the first place shouldn't be the player's responsibility.

I am a Free realms subscriber and play every day (just canceled Warhammer for it) but it has some growing pains.