how do u animate credits?
Well, you can use the agsCreditz plugin available from the Games page on the AGS site, or you could use sprites and fade them in and out. It all depends on what kind of credits you're looking for. Scrolling? Fading? :)
For a long list of credits, AGS Credits plugin would be useful. If you're making this game just alone or with a friend, I don't think you'll need much credits, just add your name to the title screen. Or put it there as an animated object and animate it by a short script.