This should go into the Suggestion & Help forum. Please read the description under each forums name in order to see what you can post in each forum. Anyway, to add to someones reputation you should look to the top right of the persons post. You will see a box with a tick and a cross on it, click on that and then you can add or take away rep. As for monitor rooms, I have no idea what you're talking about. You can subscribe to a forum and then go into your User CP to see the latest thread there, but is much easier just to go into each forum anyway and see the new posts, as you may miss out on some good posts by subscribing to forums.
A-Dust