how to add apps facebook to my page?

[say what]

I'm kinda new to facebook, and got an invite to play mafia guns, on my notifications it says that I might have received new gift ... how do you play that ...


anyways, I'm trying to undesrand how applications work. I also signed up for farmville and sudoku, how can I add it to my page...? I'v e seenprofiles where they have those added on their page .....? is that a badge? what is a badge? how can I send requests to my ffriends to play... how do apps work?
when I got o application page, I click on add to page.. but where it says which page.... it says no page found... ????

[Games4me]

There's usually a button when you go to the app that says "Add this to my profile" or something along those lines. If there isn't or you can't find it, go to your profile, and to the right where it shows all of the tabs that you have (wall, photos, info etc.) is a button with a plus(+). Click it, and it will give you a list of the apps you can add.