There are some Photoshop animation tutorials here: Tutorialized.com -- Animation

Try some of those to start off with. Trouble is, in some of them, it doesn't say whether they are in Photoshop or Imageready. Photoshop itself doesn't do animation. You have to change to Imageready to do the animation part.

Still, if you have Photoshop Elements (scaled down version of the full photoshop prog) you don't need Imageready.

I haven't tried animation in the full version of Photoshop. I looked up the help files and I am more confused than ever. I will try and have a go though. But it's way way way down the to do list. I might get around to it sometime next year... LOL :-D