Ok, first of all this should be in the Suggestions & Help forum. I don't know what you mean by Monator rooms, but people give you reputation and take away from your reputation of they either like or don't like your post.
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.
You go to your User CP and on that page it should list " Latest Reputation Received" which shows who gave you rep, and whether it was negative or positive. You can find your user cp at the top of the page. It's with the arcade, store, etc.
Hmm, maybe it's just for admins or staff. I dunno. When I click to view the user cp I have a list of rep stuff on that main page. Maybe I'll take a screen shot...I may be wrong. Thought everyone could see it, lol.