[Lazy_Perfectionist]

For the moment, you just have to state your intention, and pick a faction (or two, so you have a backup). Once we've got enough players, we'll spin the game off into its own thread and instructions will be posted. If you're curious now, you can check out the llamaserver FAQ I link to in the first post.

If you have any particular preferences other than Middle Age and the settings posted in the first post, now's a good time, though not the only time.

P.S. you can take your time in choosing a faction. A simple statement of intent to play is enough.