How to...

[Pan has a lot blanks in his nickname]

You should create a how to play Defrag guide for the main page and add a play now button to the game server list.

[<hk>]

What's a "Play now" button?
A button that let's you join the server?

I don't know. That has a bad taste to me.
When I read "play now" they usually mean:

Play now for free* !!!
* Only 9.99 Euro / month after 3 month trail.