Ladder?

[raz_atoth]

You'll automatically be 'placed' on the ladder when you'll report your first game.Until then you're considered to be a boot-camper. It's just a semantic distinction,there are no special privileges associated with the status change.
The system is quite straightforward. You post a challenge here on the forum,you reply to a challenge or you simply contact the person you wish to play with by email etc.. You can play against any member,you are not restricted as a boot-camper in any way.
There is a 'Report a game' link in the menu,the screens that follow it are pretty much self-explanatory. Usually,it's the winner who reports the game (to avoid double-reporting).